{"title":"Milltek BMW 1 Series Performance Exhaust Systems","description":"\u003cp\u003eMilltek parts for the BMW 1 Series cover four generations: E81, E82, E87 and E88 cars from 2004-12, the F20 and F21 M135i, M140i and smaller petrol models from 2012-21, and the F40 and F70 M135i xDrive and 128ti from 2019 on. You will find cat-back and particulate filter-back systems, ValveSonic+ valved exhausts, rear silencers, HJS Tuning ECE and large-bore downpipes, and Maxton diffusers. Other models sit in the wider \u003ca href=\"\/collections\/bmw-performance-exhaust-systems\"\u003eMilltek BMW range\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"milltek-hjs-tuning-ece-downpipes-bmw-1-series-114i-118i-120i-f20-f21-n13-12-15","title":"Milltek HJS Tuning ECE Downpipes BMW 1 Series 114i 118i 120i F20 F21 N13 12-15","description":"\u003ch2\u003eMilltek HJS Tuning ECE Downpipes for BMW 1 Series 114i, 118i \u0026amp; 120i (F20 \u0026amp; F21 - N13 Engine Only) (2012-2015) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's HJS Tuning ECE downpipe set for the BMW 1 Series 114i, 118i \u0026amp; 120i (F20 \u0026amp; F21 - N13 Engine Only). These replace the factory downpipes with HJS high-flow sports catalysts that carry full ECE type-approval, so you get a genuine flow improvement over the restrictive factory units without taking the car outside emissions compliance.\u003c\/p\u003e\n\u003cp\u003eThey're aimed at drivers who want more from the downpipes than the standard units allow, but need the car to stay legally usable on the road and pass an emissions test, which a straight de-cat pipe won't do.\u003c\/p\u003e\n\u003cp\u003eBecause they're type-approved, these can be run on a car that's used on the road, unlike a straight de-cat pipe.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e HJS Tuning ECE Downpipes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 70mm (2.76\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e70mm (2.76\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 114i, 118i \u0026amp; 120i (F20 \u0026amp; F21 - N13 Engine Only) (2012-2015)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 116i (F20 and F21 - N13 Engine Only) (2012-2015)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek HJS Tuning ECE Downpipes BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: For Fitment to OE \u0026amp; Milltek Sport Cat Back Systems. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 116i (F20 and F21 - N13 Engine Only)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 116i (F20 and F21 - N13 Engine Only) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek HJS Tuning ECE Downpipes BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392758296961,"sku":"MIL-SSXBM1060","price":1572.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1060_1.jpg?v=1791891877"},{"product_id":"milltek-hjs-tuning-ece-downpipes-bmw-1-series-116i-f20-f21-n13-12-15","title":"Milltek HJS Tuning ECE Downpipes BMW 1 Series 116i F20 F21 N13 12-15","description":"\u003ch2\u003eMilltek HJS Tuning ECE Downpipes for BMW 1 Series 114i, 118i \u0026amp; 120i (F20 \u0026amp; F21 - N13 Engine Only) (2012-2015) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's HJS Tuning ECE downpipe set for the BMW 1 Series 116i (F20 and F21 - N13 Engine Only). These replace the factory downpipes with HJS high-flow sports catalysts that carry full ECE type-approval, so you get a genuine flow improvement over the restrictive factory units without taking the car outside emissions compliance.\u003c\/p\u003e\n\u003cp\u003eThey're aimed at drivers who want more from the downpipes than the standard units allow, but need the car to stay legally usable on the road and pass an emissions test, which a straight de-cat pipe won't do.\u003c\/p\u003e\n\u003cp\u003eBecause they're type-approved, these can be run on a car that's used on the road, unlike a straight de-cat pipe.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e HJS Tuning ECE Downpipes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 70mm (2.76\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e70mm (2.76\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 114i, 118i \u0026amp; 120i (F20 \u0026amp; F21 - N13 Engine Only) (2012-2015)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 116i (F20 and F21 - N13 Engine Only) (2012-2015)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek HJS Tuning ECE Downpipes BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: For Fitment to OE \u0026amp; Milltek Sport Cat Back Systems. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 116i (F20 and F21 - N13 Engine Only)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 116i (F20 and F21 - N13 Engine Only) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek HJS Tuning ECE Downpipes BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392758362497,"sku":"MIL-SSXBM1060","price":1572.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1060_1_e0a219ae-b206-46ae-840b-48414a63ab29.jpg?v=1791891884"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12","title":"Milltek Cat Back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 69.85mm (2.75\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 76.2mm Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e69.85mm (2.75\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Requires rear mounting brackets (Part numbers: 18 30 7 806 567 and 18 30 7 574 951) for the 123d model (available from your BMW dealer). We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392758657409,"sku":"MIL-SSXBM932","price":671.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM932_1.jpg?v=1791891887"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-5dr-hatch-e87-04-11","title":"Milltek Cat Back Exhaust BMW 1 Series 118d 120d M Sport 5dr Hatch E87 04-11","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 69.85mm (2.75\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 76.2mm Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e69.85mm (2.75\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Requires rear mounting brackets (Part numbers: 18 30 7 806 567 and 18 30 7 574 951) for the 123d model (available from your BMW dealer). We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392758690177,"sku":"MIL-SSXBM932","price":671.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM932_1_a99981bb-59c2-4cf3-a959-6a1843077ce5.jpg?v=1791891889"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12","title":"Milltek Cat Back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82) (2008-2012) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 69.85mm (2.75\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 76.2mm Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e69.85mm (2.75\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82) (2008-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport Coupé (E82) (2008-2012)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e; the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N54), which needs the \u003ca href=\"\/products\/milltek-secondary-cat-back-exhaust-bmw-1-series-135i-coupe-e82-cabriolet-e88-n54-08-10\"\u003eMilltek Secondary Cat-back Exhaust BMW 1 Series 135i Coupé E82 Cabriolet E88 N54 08-10\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, note: Requires rear mounting brackets (Part numbers: 18 30 7 806 567 and 18 30 7 574 951) for the 123d model (available from your BMW dealer). We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 123d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 123d M Sport Coupé (E82) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392758722945,"sku":"MIL-SSXBM951","price":675.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM951_1_08e09063-f800-4eee-b299-ef3a5cfedb97.jpg?v=1791891891"},{"product_id":"milltek-rear-silencers-bmw-1-series-120i-125i-f20-f21-b48-16-21","title":"Milltek Rear Silencers BMW 1 Series 120i 125i F20 F21 B48 16-21","description":"\u003ch2\u003eMilltek Rear Silencers for BMW 1 Series 120i \u0026amp; 125i (F20 \u0026amp; F21 - B48 Engine Only inc OPF Models) (2016-2021) – Revised Sound, Rear Section Only\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's rear silencer for the BMW 1 Series 120i \u0026amp; 125i (F20 \u0026amp; F21 - B48 Engine Only inc OPF Models). It's a standalone replacement for the rear silencer only, swapping it for a version tuned for a different sound without changing anything further forward in the system. It's offered in non-resonated or resonated EC approved versions, valved or non-valved versions and 7 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's for owners looking to fine-tune the exhaust note at the tailpipe end, typically alongside an existing cat-back or axle-back system, rather than a complete exhaust upgrade on its own.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Rear Silencer(s)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 70mm (2.76\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e70mm (2.76\") pipework\u003c\/li\u003e\n\u003cli\u003eSwaps the rear silencer only, without changing the rest of the system\u003c\/li\u003e\n\u003cli\u003eChoice of 7 tailpipe finishes: GT-80 Cerakote Black, GT-80 Polished, GT-90 Burnt Titanium, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium, JET-90 Carbon Fibre\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eValved versions available for switchable volume\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series 120i \u0026amp; 125i (F20 \u0026amp; F21 - B48 Engine Only inc OPF Models) (2016-2021)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-rear-silencers-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Rear Silencers BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.\u003c\/p\u003e\n\u003ch3\u003eShould I choose the valved or non-valved version?\u003c\/h3\u003e\n\u003cp\u003eThe valved version lets you switch between a quieter tone and the full exhaust note. Choose non-valved if you want the same sound all the time.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-80 Cerakote Black, GT-80 Polished, GT-90 Burnt Titanium, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium, JET-90 Carbon Fibre. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-rear-silencers-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Rear Silencers BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ Non-Valved \/ GT-80 Cerakote Black","offer_id":56392758788481,"sku":"MIL-SSXBM1131","price":617.11,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Non-Valved \/ GT-80 Polished","offer_id":56392758821249,"sku":"MIL-SSXBM1132","price":526.43,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Non-Valved \/ GT-90 Burnt Titanium","offer_id":56392758854017,"sku":"MIL-SSXBM1136","price":878.49,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Non-Valved \/ GT-90 Cerakote Black","offer_id":56392758886785,"sku":"MIL-SSXBM1134","price":651.76,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Non-Valved \/ GT-90 Polished","offer_id":56392758919553,"sku":"MIL-SSXBM1133","price":566.6,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Non-Valved \/ GT-90 Titanium","offer_id":56392758952321,"sku":"MIL-SSXBM1135","price":789.31,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ Non-Valved \/ JET-90 Carbon Fibre","offer_id":56392758985089,"sku":"MIL-SSXBM1137","price":677.33,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Valved \/ GT-80 Cerakote Black","offer_id":56392759017857,"sku":"MIL-SSXBM1130","price":1093.88,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ Valved \/ GT-80 Polished","offer_id":56392759050625,"sku":"MIL-SSXBM1129","price":1003.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1131_1.jpg?v=1791891908"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-123d-m-sport-3dr-e81-07-12","title":"Milltek Cat Back Exhaust BMW 1 Series 123d M Sport 3dr E81 07-12","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 123d M Sport 3-door (E81). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 69.85mm (2.75\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 76.2mm Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e69.85mm (2.75\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392759083393,"sku":"MIL-SSXBM932","price":671.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM932_1_7c06132c-7277-4750-a738-44f190dac79f.jpg?v=1791891897"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-123d-m-sport-5dr-hatch-e87-04-11","title":"Milltek Cat Back Exhaust BMW 1 Series 123d M Sport 5dr Hatch E87 04-11","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 123d M Sport 5-door Hatchback (E87). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 69.85mm (2.75\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 76.2mm Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e69.85mm (2.75\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 3-door (E81) (2007-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport 5-door Hatchback (E87) (2004-2011)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 118d \u0026amp; 120d M Sport 5-door Hatchback (E87) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392759116161,"sku":"MIL-SSXBM932","price":671.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM932_1_079656d8-1e80-45b1-9d27-37eb58848060.jpg?v=1791891899"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-123d-m-sport-coupe-e82-08-12","title":"Milltek Cat Back Exhaust BMW 1 Series 123d M Sport Coupé E82 08-12","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82) (2008-2012) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 123d M Sport Coupé (E82). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 69.85mm (2.75\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 76.2mm Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e69.85mm (2.75\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82) (2008-2012)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 123d M Sport Coupé (E82) (2008-2012)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e; the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N54), which needs the \u003ca href=\"\/products\/milltek-secondary-cat-back-exhaust-bmw-1-series-135i-coupe-e82-cabriolet-e88-n54-08-10\"\u003eMilltek Secondary Cat-back Exhaust BMW 1 Series 135i Coupé E82 Cabriolet E88 N54 08-10\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 123d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 123d M Sport Coupé (E82) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392759148929,"sku":"MIL-SSXBM951","price":675.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM951_1.jpg?v=1791891900"},{"product_id":"milltek-maxton-diffuser-quad-outlet-bmw-1-series-128ti-5dr-f40-opf-gpf-21","title":"Milltek Maxton Diffuser Quad Outlet BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Maxton Diffuser Quad Outlet for BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards) – Genuine Milltek Fitment Part\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's diffuser for the BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped). It's a rear diffuser, produced in collaboration with Maxton Design, styled to complement the matching Milltek exhaust tailpipes rather than change how the exhaust itself performs.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Additional parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eGenuine Milltek part designed to work with the matching Milltek system\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e any model, engine or body style not listed above. Check your car before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek Filter-back Exhaust BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"Maxton Diffuser for Quad Outlet System (M2 Style) - Gloss\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392759214465,"sku":"MIL-SSXBM1242","price":214.93,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1242_1.jpg?v=1791891907"},{"product_id":"milltek-gpf-opf-bypass-bmw-1-series-128ti-5dr-f40-opf-gpf-21","title":"Milltek GPF\/OPF Bypass BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+","description":"\u003ch2\u003eMilltek GPF\/OPF Bypass for BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards) – Filter Delete, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's GPF\/OPF bypass pipe for the BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped). It replaces the section of pipe housing the factory petrol particulate filter with a straight-through pipe, clearing the last major restriction left in a modern turbocharged petrol exhaust once a de-cat and remap are already in place. It's offered in versions to suit the factory or a Milltek system, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners already running a de-cat and a supporting remap who want to clear the final restriction in the system, not a bolt-on for a car that needs to stay road legal.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the particulate filter, it's intended for off-road and competition use. A car with the GPF\/OPF removed will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e GPF\/OPF Bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eStraight-through pipe in place of the factory petrol particulate filter (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. Some versions: Fits to the Milltek Sport OPF\/GPF Back System Only - Requires Stage 2 ECU Remap or OPF\/GPF Bypass Module (Available from www.leib-engineering.de). Some versions: Fits to the OE OPF\/GPF Back System Only MSBM393 - Requires Stage 2 ECU Remap or OPF\/GPF Bypass Module (Available from www.leib-engineering.de). This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek Filter-back Exhaust BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the particulate filter means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek notes: \"Fits Milltek Cat Back Only, Stage 2 Remap Required\". Without suitable software the engine management is likely to log faults.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Some are made for the factory (OE) system and others for the Milltek cat-back, so check the notes for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Fits Milltek Cat Back Only","offer_id":56392759247233,"sku":"MIL-SSXBM1201","price":216.1,"currency_code":"GBP","in_stock":true},{"title":"Fits OE System Only","offer_id":56392759280001,"sku":"MIL-SSXBM1200","price":216.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1201_1.jpg?v=1791891912"},{"product_id":"milltek-filter-back-exhaust-bmw-1-series-128ti-5dr-f40-opf-gpf-21","title":"Milltek Filter Back Exhaust BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+","description":"\u003ch2\u003eMilltek Filter-back Exhaust for BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards) – Sharper Sound, Filter Retained\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's particulate filter-back system for the BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped). It replaces everything downstream of the factory diesel or petrol particulate filter with wider-bore pipework and re-tuned silencers, cutting back pressure and sharpening the exhaust note. The filter itself is left exactly where the manufacturer fitted it, so emissions equipment is unaffected. It's offered in 9 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the right choice if you want a sportier sound and a genuine, if modest, flow improvement on a filter-equipped car, without going anywhere near the parts of the system that keep it emissions-compliant.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Particulate Filter-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eFits behind the factory particulate filter, which stays in place\u003c\/li\u003e\n\u003cli\u003eChoice of 9 tailpipe finishes: GT-100 Brushed Titanium, GT-100 Burnt Titanium, GT-100 Black, GT-100 Polished, GT-115 Brushed Titanium, GT-115 Burnt Titanium, GT-115 Cerakote Black, GT-115 Polished and more\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f40-opf-gpf-19\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F40 OPF\/GPF 19+\u003c\/a\u003e; the BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. Some versions: Maxton x Milltek - OPF\/GPF Back System - Quad GT-100 Brushed Titanium Trims - ECE Approved - MUST BE Fitted with Maxton Diffuser. Some versions: Maxton x Milltek - OPF\/GPF Back System - Quad GT-100 Burnt\/Blue Titanium Trims - ECE Approved - MUST BE Fitted with Maxton Diffuser. Some versions: Maxton x Milltek - OPF\/GPF Back System - Quad GT-100 Cerkote Black Trims - ECE Approved - MUST BE Fitted with Maxton Diffuser. Some versions: Maxton x Milltek - OPF\/GPF Back System - Quad GT-100 Polished Trims - ECE Approved - MUST BE Fitted with Maxton Diffuser. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-100 Brushed Titanium, GT-100 Burnt Titanium, GT-100 Black, GT-100 Polished, GT-115 Brushed Titanium, GT-115 Burnt Titanium, GT-115 Cerakote Black, GT-115 Polished, JET-115 Carbon Fibre. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f40-opf-gpf-19\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F40 OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory particulate filter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory particulate filter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory particulate filter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"GT-100 Brushed Titanium","offer_id":56392759345537,"sku":"MIL-SSXBM1250","price":2075.54,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Burnt Titanium","offer_id":56392759378305,"sku":"MIL-SSXBM1251","price":2165.36,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Black","offer_id":56392759411073,"sku":"MIL-SSXBM1249","price":1707.38,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Polished","offer_id":56392759443841,"sku":"MIL-SSXBM1248","price":1585.85,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Brushed Titanium","offer_id":56392759476609,"sku":"MIL-SSXBM1204","price":1460.02,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Burnt Titanium","offer_id":56392759509377,"sku":"MIL-SSXBM1205","price":1523.18,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Cerakote Black","offer_id":56392759542145,"sku":"MIL-SSXBM1203","price":1340.32,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Polished","offer_id":56392759574913,"sku":"MIL-SSXBM1202","price":1195.55,"currency_code":"GBP","in_stock":true},{"title":"JET-115 Carbon Fibre","offer_id":56392759607681,"sku":"MIL-SSXBM1206","price":1489.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1250_1.jpg?v=1791891925"},{"product_id":"milltek-secondary-cat-back-exhaust-bmw-1-series-135i-coupe-e82-cabriolet-e88-n54-08-10","title":"Milltek Secondary Cat Back Exhaust BMW 1 Series 135i Coupé E82 Cabriolet E88 N54 08-10","description":"\u003ch2\u003eMilltek Secondary Cat-back Exhaust for BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N54) (2008-2010) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N54). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Secondary Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 63.5mm (2.5\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 80mm GT80\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e63.5mm (2.5\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 135i Coupé E82 and Cabriolet E88 (N54) (2008-2010)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 135i Coupé E82 and Cabriolet E88 (N55) (2010-2012)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N55)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N55) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392759640449,"sku":"MIL-SSXBM948","price":1156.61,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM948_1_d52e59e9-ee27-4dd1-bee2-13879cc8ddff.jpg?v=1791891919"},{"product_id":"milltek-secondary-cat-back-exhaust-bmw-1-series-135i-coupe-e82-cabriolet-e88-n55-10-12","title":"Milltek Secondary Cat Back Exhaust BMW 1 Series 135i Coupé E82 Cabriolet E88 N55 10-12","description":"\u003ch2\u003eMilltek Secondary Cat-back Exhaust for BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N54) (2008-2010) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N55). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Secondary Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 63.5mm (2.5\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 80mm GT80\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e63.5mm (2.5\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 135i Coupé E82 and Cabriolet E88 (N54) (2008-2010)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series 135i Coupé E82 and Cabriolet E88 (N55) (2010-2012)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N55)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series 135i Coupé E82 and Cabriolet E88 (N55) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 118d \u0026amp; 120d M Sport Coupé (E82)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-coupe-e82-08-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport Coupé E82 08-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392759673217,"sku":"MIL-SSXBM948","price":1156.61,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM948_1.jpg?v=1791891919"},{"product_id":"milltek-valvesonic-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16","title":"Milltek ValveSonic + BMW 1 Series M135i 3dr 5dr F21 F20 Non-xDrive 12-16","description":"\u003ch2\u003eMilltek ValveSonic + for BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's ValveSonic system for the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive). It adds Milltek's electronically-operated valve to the system, opening a less restrictive path through the silencer that stays closed for a refined, near-standard tone and opens under load or on demand for a louder, more open sound.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet day to day and switch to the full exhaust note whenever you actually want to hear it.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e ValveSonic +\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvesonic:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M2 Coupé (F87) (2016-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M235i Coupé (F22) (Non xDrive) (2014-2015)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series F80 M3 \u0026amp; M3 Competition Saloon (Non OPF\/GPF Models Only) (2014-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 4 Series F82\/83 M4 Coupe\/Convertible \u0026amp; M4 Competition Coupé (Non-OPF equipped models only) (2014-2018)\u003c\/li\u003e\n\u003cli\u003eMilltek Sport Products ValveSonic + BMW F Series Models (1992 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e any model, engine or body style not listed above. Check your car before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-large-bore-downpipe-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Large-bore Downpipe BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392759705985,"sku":"MIL-SSXVS001","price":394.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXVS001_1.jpg?v=1791891922"},{"product_id":"milltek-rear-silencers-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16","title":"Milltek Rear Silencers BMW 1 Series M135i 3dr 5dr F21 F20 Non-xDrive 12-16","description":"\u003ch2\u003eMilltek Rear Silencers for BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016) – Revised Sound, Rear Section Only\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's rear silencer for the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive). It's a standalone replacement for the rear silencer only, swapping it for a version tuned for a different sound without changing anything further forward in the system. It's offered in a choice of ec approved (No, Yes) and 3 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's for owners looking to fine-tune the exhaust note at the tailpipe end, typically alongside an existing cat-back or axle-back system, rather than a complete exhaust upgrade on its own.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Rear Silencer(s)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 90mm GT90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eSwaps the rear silencer only, without changing the rest of the system\u003c\/li\u003e\n\u003cli\u003eChoice of 3 tailpipe finishes: Cerakote Black, Polished, Titanium\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 120i \u0026amp; 125i (F20 \u0026amp; F21 - B48 Engine Only inc OPF Models), which needs the \u003ca href=\"\/products\/milltek-rear-silencers-bmw-1-series-120i-125i-f20-f21-b48-16-21\"\u003eMilltek Rear Silencers BMW 1 Series 120i 125i F20 F21 B48 16-21\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-valvesonic-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek ValveSonic + BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: Cerakote Black, Polished, Titanium. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 120i \u0026amp; 125i (F20 \u0026amp; F21 - B48 Engine Only inc OPF Models)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-rear-silencers-bmw-1-series-120i-125i-f20-f21-b48-16-21\"\u003eMilltek Rear Silencers BMW 1 Series 120i 125i F20 F21 B48 16-21\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"No \/ Cerakote Black","offer_id":56392759771521,"sku":"MIL-SSXBM960","price":898.46,"currency_code":"GBP","in_stock":true},{"title":"No \/ Polished","offer_id":56392759804289,"sku":"MIL-SSXBM959","price":813.3,"currency_code":"GBP","in_stock":true},{"title":"No \/ Titanium","offer_id":56392759837057,"sku":"MIL-SSXBM1026","price":1036.01,"currency_code":"GBP","in_stock":true},{"title":"Yes \/ Cerakote Black","offer_id":56392759869825,"sku":"MIL-SSXBM958","price":896.04,"currency_code":"GBP","in_stock":true},{"title":"Yes \/ Polished","offer_id":56392759902593,"sku":"MIL-SSXBM957","price":810.88,"currency_code":"GBP","in_stock":true},{"title":"Yes \/ Titanium","offer_id":56392759935361,"sku":"MIL-SSXBM1025","price":1033.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM960_1.jpg?v=1791891938"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16","title":"Milltek Cat Back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20 Non-xDrive 12-16","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in 3 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Twin 90mm GT90\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 3 tailpipe finishes: GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e; the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, OPF\/GPF Only), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-opf-gpf-19-20\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr (F20 \u0026amp; F21 LCI, OPF\/GPF Only) 19-20\u003c\/a\u003e; the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-valvesonic-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek ValveSonic + BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Race, Non-Resonated \/ GT-90 Cerakote Black","offer_id":56392759968129,"sku":"MIL-SSXBM966","price":1296.61,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ GT-90 Polished","offer_id":56392760000897,"sku":"MIL-SSXBM967","price":1211.45,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ GT-90 Titanium","offer_id":56392760033665,"sku":"MIL-SSXBM1024","price":1434.17,"currency_code":"GBP","in_stock":true},{"title":"Road, Non-Resonated \/ GT-90 Cerakote Black","offer_id":56392760066433,"sku":"MIL-SSXBM965","price":1294.2,"currency_code":"GBP","in_stock":true},{"title":"Road, Non-Resonated \/ GT-90 Polished","offer_id":56392760099201,"sku":"MIL-SSXBM964","price":1209.04,"currency_code":"GBP","in_stock":true},{"title":"Road, Non-Resonated \/ GT-90 Titanium","offer_id":56392760131969,"sku":"MIL-SSXBM1023","price":1431.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM966_1.jpg?v=1791891938"},{"product_id":"milltek-maxton-diffuser-quad-outlet-bmw-1-series-m135i-xdrive-5dr-f40-opf-gpf-19","title":"Milltek Maxton Diffuser Quad Outlet BMW 1 Series M135i xDrive 5dr F40 OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Maxton Diffuser Quad Outlet for BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards) – Genuine Milltek Fitment Part\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's diffuser for the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped). It's a rear diffuser, produced in collaboration with Maxton Design, styled to complement the matching Milltek exhaust tailpipes rather than change how the exhaust itself performs.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Additional parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eGenuine Milltek part designed to work with the matching Milltek system\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped) (2021 onwards)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped) (2019 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e any model, engine or body style not listed above. Check your car before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek Filter-back Exhaust BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eWhat does it work with?\u003c\/h3\u003e\n\u003cp\u003eMilltek notes: \"Maxton Diffuser for Quad Outlet System (M2 Style) - Gloss\". Check this matches your current exhaust before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392760164737,"sku":"MIL-SSXBM1242","price":214.93,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1242_1_fb02d457-94f9-4256-8523-df135e84f041.jpg?v=1791891930"},{"product_id":"milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f40-opf-gpf-19","title":"Milltek Filter Back Exhaust BMW 1 Series M135i xDrive 5dr F40 OPF\/GPF 19+","description":"\u003ch2\u003eMilltek Filter-back Exhaust for BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped) (2019 onwards) – Sharper Sound, Filter Retained\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's particulate filter-back system for the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped). It replaces everything downstream of the factory diesel or petrol particulate filter with wider-bore pipework and re-tuned silencers, cutting back pressure and sharpening the exhaust note. The filter itself is left exactly where the manufacturer fitted it, so emissions equipment is unaffected. It's offered in 9 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the right choice if you want a sportier sound and a genuine, if modest, flow improvement on a filter-equipped car, without going anywhere near the parts of the system that keep it emissions-compliant.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Particulate Filter-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eFits behind the factory particulate filter, which stays in place\u003c\/li\u003e\n\u003cli\u003eChoice of 9 tailpipe finishes: GT-100 Brushed Titanium, GT-100 Burnt Titanium, GT-100 Cerakote Black, GT-100 Polished, GT-115 Burnt Titanium, GT-115 Cerakote Black, GT-115 Polished, GT-115 Titanium and more\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped) (2019 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+\u003c\/a\u003e; the BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek Filter-back Exhaust BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThe fitting time varies by version; see the specification table for the option you choose. Some versions: Maxton x Milltek - OPF\/GPF Back System with Quad GT-100 Brushed Titanium Trims - ECE Approved (OE System Requires To Be Cut For Installation) - MUST BE Fitted with Maxton Diffuser. Some versions: Maxton x Milltek - OPF\/GPF Back System with Quad GT-100 Burnt\/Blue Titanium Trims - ECE Approved (OE System Requires To Be Cut For Installation) - MUST BE Fitted with Maxton Diffuser. Some versions: Maxton x Milltek - OPF\/GPF Back System with Quad GT-100 Cerakote Black Trims - ECE Approved (OE System Requires To Be Cut For Installation) - MUST BE Fitted with Maxton Diffuser. Some versions: Maxton x Milltek - OPF\/GPF Back System with Quad GT-100 Polished Trims - ECE Approved (OE System Requires To Be Cut For Installation) - MUST BE Fitted with Maxton Diffuser. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-100 Brushed Titanium, GT-100 Burnt Titanium, GT-100 Cerakote Black, GT-100 Polished, GT-115 Burnt Titanium, GT-115 Cerakote Black, GT-115 Polished, GT-115 Titanium, JET-115 Carbon Fibre. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory particulate filter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory particulate filter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory particulate filter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eIt depends on the version. Milltek's fitting time for each option is shown in its specification table.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"GT-100 Brushed Titanium","offer_id":56392760197505,"sku":"MIL-SSXBM1246","price":2013.52,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Burnt Titanium","offer_id":56392760230273,"sku":"MIL-SSXBM1247","price":2103.34,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Cerakote Black","offer_id":56392760263041,"sku":"MIL-SSXBM1245","price":1645.36,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Polished","offer_id":56392760295809,"sku":"MIL-SSXBM1244","price":1523.83,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Burnt Titanium","offer_id":56392760328577,"sku":"MIL-SSXBM1155","price":1461.15,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Cerakote Black","offer_id":56392760361345,"sku":"MIL-SSXBM1153","price":1278.29,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Polished","offer_id":56392760394113,"sku":"MIL-SSXBM1152","price":1133.52,"currency_code":"GBP","in_stock":true},{"title":"GT-115 Titanium","offer_id":56392760426881,"sku":"MIL-SSXBM1154","price":1398.0,"currency_code":"GBP","in_stock":true},{"title":"JET-115 Carbon Fibre","offer_id":56392760459649,"sku":"MIL-SSXBM1156","price":1427.43,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1246_1.jpg?v=1791891951"},{"product_id":"milltek-gpf-opf-bypass-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24","title":"Milltek GPF\/OPF Bypass BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+","description":"\u003ch2\u003eMilltek GPF\/OPF Bypass for BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped) (2024 onwards) – Filter Delete, Motorsport Use\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's GPF\/OPF bypass pipe for the BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped). It replaces the section of pipe housing the factory petrol particulate filter with a straight-through pipe, clearing the last major restriction left in a modern turbocharged petrol exhaust once a de-cat and remap are already in place. It's offered in OE downpipe and milltek OPF back system only or OE downpipe and OE OPF back system only versions, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners already running a de-cat and a supporting remap who want to clear the final restriction in the system, not a bolt-on for a car that needs to stay road legal.\u003c\/p\u003e\n\u003cp\u003eBecause it removes the particulate filter, it's intended for off-road and competition use. A car with the GPF\/OPF removed will fail an MOT emissions test and isn't legal to use on UK roads.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e GPF\/OPF Bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eStraight-through pipe in place of the factory petrol particulate filter (off-road and competition use only)\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped) (2024 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eSome versions: To fit to OE downpipe and Milltek OPF Back System Only. Some versions: To fit to OE downpipe and OE OPF Back System Only. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eNo. Removing the particulate filter means the car will fail an MOT emissions test, so it is for off-road and competition use only.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists it for use with the factory (OE) exhaust system.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"OE downpipe and Milltek OPF Back System Only","offer_id":56392760492417,"sku":"MIL-SSXBM1421","price":228.51,"currency_code":"GBP","in_stock":true},{"title":"OE downpipe and OE OPF Back System Only","offer_id":56392760525185,"sku":"MIL-SSXBM1420","price":225.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1421_1.jpg?v=1791891942"},{"product_id":"milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24","title":"Milltek Filter Back Exhaust BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+","description":"\u003ch2\u003eMilltek Filter-back Exhaust for BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped) (2024 onwards) – Sharper Sound, Filter Retained\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's particulate filter-back system for the BMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped). It replaces everything downstream of the factory diesel or petrol particulate filter with wider-bore pipework and re-tuned silencers, cutting back pressure and sharpening the exhaust note. The filter itself is left exactly where the manufacturer fitted it, so emissions equipment is unaffected. It's offered in 4 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's the right choice if you want a sportier sound and a genuine, if modest, flow improvement on a filter-equipped car, without going anywhere near the parts of the system that keep it emissions-compliant.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Particulate Filter-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Style:\u003c\/strong\u003e Quad 100mm GT100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eFits behind the factory particulate filter, which stays in place\u003c\/li\u003e\n\u003cli\u003eChoice of 4 tailpipe finishes: GT-100 Brushed Titanium, GT-100 Burnt Titanium, GT-100 Cerakote Black, GT-100 Polished\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series M135i xDrive 5 Door (F70 OPF\/GPF Equipped) (2024 onwards)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f40-opf-gpf-19\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F40 OPF\/GPF 19+\u003c\/a\u003e; the BMW 1 Series 128ti 5 Door (F40 OPF\/GPF Equipped), which needs the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-128ti-5dr-f40-opf-gpf-21\"\u003eMilltek Filter-back Exhaust BMW 1 Series 128ti 5dr F40 OPF\/GPF 21+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eWe recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-gpf-opf-bypass-bmw-1-series-m135i-xdrive-5dr-f70-opf-gpf-24\"\u003eMilltek GPF\/OPF Bypass BMW 1 Series M135i xDrive 5dr F70 OPF\/GPF 24+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-100 Brushed Titanium, GT-100 Burnt Titanium, GT-100 Cerakote Black, GT-100 Polished. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M135i xDrive 5 Door (F40 OPF\/GPF Equipped)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-filter-back-exhaust-bmw-1-series-m135i-xdrive-5dr-f40-opf-gpf-19\"\u003eMilltek Filter-back Exhaust BMW 1 Series M135i xDrive 5dr F40 OPF\/GPF 19+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory particulate filter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory particulate filter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory particulate filter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"GT-100 Brushed Titanium","offer_id":56392760590721,"sku":"MIL-SSXBM1418","price":2228.95,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Burnt Titanium","offer_id":56392760623489,"sku":"MIL-SSXBM1419","price":2545.22,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Cerakote Black","offer_id":56392760656257,"sku":"MIL-SSXBM1416","price":1922.65,"currency_code":"GBP","in_stock":true},{"title":"GT-100 Polished","offer_id":56392760689025,"sku":"MIL-SSXBM1417","price":1922.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1418_1.jpg?v=1791891953"},{"product_id":"milltek-valvesonic-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18","title":"Milltek ValveSonic + BMW 1 Series M140i 3dr 5dr F20 F21 LCI Non-OPF 15-18","description":"\u003ch2\u003eMilltek ValveSonic + for BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016) – Switchable Exhaust Volume\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's ValveSonic system for the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF). It adds Milltek's electronically-operated valve to the system, opening a less restrictive path through the silencer that stays closed for a refined, near-standard tone and opens under load or on demand for a louder, more open sound.\u003c\/p\u003e\n\u003cp\u003eIt's the option to go for if you want the flexibility to keep the car quiet day to day and switch to the full exhaust note whenever you actually want to hear it.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e ValveSonic +\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvesonic:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive) (2012-2016)\u003c\/li\u003e\n\u003cli\u003eBMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M2 Coupé (F87) (2016-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M235i Coupé (F22) (Non xDrive) (2014-2015)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series F80 M3 \u0026amp; M3 Competition Saloon (Non OPF\/GPF Models Only) (2014-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 4 Series F82\/83 M4 Coupe\/Convertible \u0026amp; M4 Competition Coupé (Non-OPF equipped models only) (2014-2018)\u003c\/li\u003e\n\u003cli\u003eMilltek Sport Products ValveSonic + BMW F Series Models (1992 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e any model, engine or body style not listed above. Check your car before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eThis involves connecting to the car's wiring and exhaust valves, so we recommend fitting by a specialist familiar with the car's electrics.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-large-bore-downpipe-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Large-bore Downpipe BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eWill the car be louder all the time?\u003c\/h3\u003e\n\u003cp\u003eNo. With the valve closed the tone stays close to standard; open it when you want the full exhaust note.\u003c\/p\u003e\n\u003ch3\u003eIs this a complete exhaust system?\u003c\/h3\u003e\n\u003cp\u003eNo. It is designed to be used with the system or factory parts described above, rather than as a complete exhaust on its own.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392760721793,"sku":"MIL-SSXVS001","price":394.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXVS001_1_c7042f69-970b-41f9-8d70-f84a7676d7b7.jpg?v=1791891949"},{"product_id":"milltek-large-bore-downpipe-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18","title":"Milltek Large-bore Downpipe BMW 1 Series M140i 3dr 5dr F20 F21 LCI Non-OPF 15-18","description":"\u003ch2\u003eMilltek Large-bore Downpipe for BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018) – Improved Turbo Flow\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's large-bore downpipe for the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF). It replaces the factory downpipe with a larger-bore pipe for improved flow at one of the most restrictive points in the system. Check the specification below to see whether this particular version retains a catalyst or removes it.\u003c\/p\u003e\n\u003cp\u003eIf the catalyst has been removed, this is intended for off-road and competition use only and the car won't be legal for road use fitted with it. Check the specification below for this system's catalyst and approval status.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Large-bore Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 90mm (3.54\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 2 to 3 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e90mm (3.54\") pipework\u003c\/li\u003e\n\u003cli\u003eLarger, less restrictive downpipe improves flow from the turbo outlet\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M240i Coupe (F22 LCI, OPF Only \u0026amp; Non xDrive Models) (2019-2020)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e any model, engine or body style not listed above. Check your car before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 2 to 3 hours. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek lists this as a race part without EC approval, so it is intended for off-road and competition use.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 2 to 3 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392760754561,"sku":"MIL-SSXBM1322","price":811.85,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1322_1.jpg?v=1791891952"},{"product_id":"milltek-hjs-tuning-ece-downpipes-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18","title":"Milltek HJS Tuning ECE Downpipes BMW 1 Series M140i 3dr 5dr F20 F21 LCI Non-OPF 15-18","description":"\u003ch2\u003eMilltek HJS Tuning ECE Downpipes for BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's HJS Tuning ECE downpipe set for the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF). These replace the factory downpipes with HJS high-flow sports catalysts that carry full ECE type-approval, so you get a genuine flow improvement over the restrictive factory units without taking the car outside emissions compliance.\u003c\/p\u003e\n\u003cp\u003eThey're aimed at drivers who want more from the downpipes than the standard units allow, but need the car to stay legally usable on the road and pass an emissions test, which a straight de-cat pipe won't do.\u003c\/p\u003e\n\u003cp\u003eBecause they're type-approved, these can be run on a car that's used on the road, unlike a straight de-cat pipe.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e HJS Tuning ECE Downpipes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 80mm (3.15\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 2 to 2.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e80mm (3.15\") pipework\u003c\/li\u003e\n\u003cli\u003eHigh-flow sports catalyst flows better than the dense factory unit while still treating exhaust gases\u003c\/li\u003e\n\u003cli\u003eEC approved\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive) (2015-2018)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series F30 \u0026amp; F31 M340i Saloon \u0026amp; Touring (LCI models, xDrive \u0026amp; non xDrive Models) (2017-2019)\u003c\/li\u003e\n\u003cli\u003eBMW 4 Series F32 \u0026amp; F33 M440i Coupe \u0026amp; Grand Coupe (xDrive \u0026amp; non xDrive Models) (2017-2019)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series 114i, 118i \u0026amp; 120i (F20 \u0026amp; F21 - N13 Engine Only), which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-bmw-1-series-114i-118i-120i-f20-f21-n13-12-15\"\u003eMilltek HJS Tuning ECE Downpipes BMW 1 Series 114i, 118i 120i F20 F21 N13 12-15\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 2 to 2.5 hours. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive)?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 2 Series M240i Coupe (F22 LCI, Non-OPF \u0026amp; Non-xDrive) as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series 114i, 118i \u0026amp; 120i (F20 \u0026amp; F21 - N13 Engine Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-bmw-1-series-114i-118i-120i-f20-f21-n13-12-15\"\u003eMilltek HJS Tuning ECE Downpipes BMW 1 Series 114i, 118i 120i F20 F21 N13 12-15\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eEvery version of this part is listed by Milltek as EC approved.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eA suitable remap is strongly recommended, as the engine management needs to account for the change in flow and sensor readings. Speak to your tuner before fitting.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with my standard exhaust?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists it for use with the factory (OE) exhaust system.\u003c\/p\u003e\n\u003ch3\u003eHow is a sports cat different from a de-cat?\u003c\/h3\u003e\n\u003cp\u003eA sports cat still contains a catalyst, just a less dense one that flows better than the factory unit. A de-cat removes the catalyst completely.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 2 to 2.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":56392761246081,"sku":"MIL-SSXBM1039","price":1765.04,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1039_1_2c7fe1d9-512f-4cae-8e06-841c12b1a08b.jpg?v=1791891959"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-opf-gpf-19-20","title":"Milltek Cat Back Exhaust BMW 1 Series M140i 3dr 5dr F20 F21 LCI OPF\/GPF 19-20","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, OPF\/GPF Only) (2019-2020) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, OPF\/GPF Only). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated or resonated EC approved versions and 5 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 76.2mm (3\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e76.2mm (3\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 5 tailpipe finishes: GT-90 Burnt Titanium, JET-90 Carbon Fibre, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium\u003c\/li\u003e\n\u003cli\u003eEC approved versions available\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, OPF\/GPF Only) (2019-2020)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. Some versions: GPF Back - Non-Resonated Race with Burnt Titanium GT-90 Trims (OE Requires Cutting). Some versions: GPF Back - Non-Resonated Race with Carbon Fibre Jet-90 Trims (OE Requires Cutting). Some versions: GPF Back - Non-Resonated Race with Cerakote Black GT-90 Trims (OE Requires Cutting). Some versions: GPF Back - Non-Resonated Race with Polished GT-90 Trims (OE Requires Cutting). We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-90 Burnt Titanium, JET-90 Carbon Fibre, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eSome versions are EC approved; check the EC Approved line in the specification for the option you choose.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ GT-90 Burnt Titanium","offer_id":56392761475457,"sku":"MIL-SSXBM1109","price":1524.6,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ JET-90 Carbon Fibre","offer_id":56392761508225,"sku":"MIL-SSXBM1110","price":1323.44,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Cerakote Black","offer_id":56392761540993,"sku":"MIL-SSXBM1107","price":1297.87,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Polished","offer_id":56392761573761,"sku":"MIL-SSXBM1106","price":1212.71,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Titanium","offer_id":56392761606529,"sku":"MIL-SSXBM1108","price":1435.42,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-90 Burnt Titanium","offer_id":56392761639297,"sku":"MIL-SSXBM1114","price":1659.85,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ JET-90 Carbon Fibre","offer_id":56392761672065,"sku":"MIL-SSXBM1115","price":1458.69,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-90 Cerakote Black","offer_id":56392761704833,"sku":"MIL-SSXBM1112","price":1433.12,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-90 Polished","offer_id":56392761737601,"sku":"MIL-SSXBM1111","price":1347.96,"currency_code":"GBP","in_stock":true},{"title":"Resonated - EC Approved \/ GT-90 Titanium","offer_id":56392761770369,"sku":"MIL-SSXBM1113","price":1570.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1109_1.jpg?v=1791891979"},{"product_id":"milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18","title":"Milltek Cat Back Exhaust BMW 1 Series M140i 3dr 5dr F20 F21 LCI Non-OPF 15-18","description":"\u003ch2\u003eMilltek Cat-back Exhaust for BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated or resonated versions and 5 tailpipe finishes, so you can pick the setup that suits how the car's used.\u003c\/p\u003e\n\u003cp\u003eIt's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Type:\u003c\/strong\u003e Cat-back\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipe Diameter:\u003c\/strong\u003e 66.5mm (2.62\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC Approved:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace System:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 1 to 1.5 hours (Milltek figure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMade from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow\u003c\/li\u003e\n\u003cli\u003e66.5mm (2.62\") pipework\u003c\/li\u003e\n\u003cli\u003eReplaces the standard exhaust from the catalytic converter back, so the factory cat is retained\u003c\/li\u003e\n\u003cli\u003eChoice of 5 tailpipe finishes: GT-90 Burnt Titanium, JET-90 Carbon Fibre, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium\u003c\/li\u003e\n\u003cli\u003eResonated (quieter) or non-resonated (louder) versions\u003c\/li\u003e\n\u003cli\u003eDesigned, developed and manufactured in the UK by Milltek Sport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\u003cli\u003eBMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, Non-OPF) (2015-2018)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, OPF\/GPF Only), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-opf-gpf-19-20\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr (F20 \u0026amp; F21 LCI, OPF\/GPF Only) 19-20\u003c\/a\u003e; the BMW 1 Series M135i 3 \u0026amp; 5 Door (F21 \u0026amp; F20, Non-xDrive), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m135i-3dr-5dr-f21-f20-non-xdrive-12-16\"\u003eMilltek Cat-back Exhaust BMW 1 Series M135i 3dr 5dr F21 F20, Non-xDrive 12-16\u003c\/a\u003e; the BMW 1 Series 118d \u0026amp; 120d M Sport 3-door (E81), which needs the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-118d-120d-m-sport-3dr-e81-07-12\"\u003eMilltek Cat-back Exhaust BMW 1 Series 118d 120d M Sport 3dr E81 07-12\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 1 to 1.5 hours. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Further\u003c\/h3\u003e\n\u003cp\u003eAlso available from Milltek for this car: \u003ca href=\"\/products\/milltek-large-bore-downpipe-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-non-opf-15-18\"\u003eMilltek Large-bore Downpipe BMW 1 Series M140i 3dr \u0026amp; 5dr F20 \u0026amp; F21 LCI, Non-OPF 15-18\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between the resonated and non-resonated versions?\u003c\/h3\u003e\n\u003cp\u003eThe resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-90 Burnt Titanium, JET-90 Carbon Fibre, GT-90 Cerakote Black, GT-90 Polished, GT-90 Titanium. The finish is cosmetic and does not change the sound.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 1 Series M140i 3 \u0026amp; 5 Door (F20 \u0026amp; F21 LCI, OPF\/GPF Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-1-series-m140i-3dr-5dr-f20-f21-lci-opf-gpf-19-20\"\u003eMilltek Cat-back Exhaust BMW 1 Series M140i 3dr \u0026amp; 5dr (F20 \u0026amp; F21 LCI, OPF\/GPF Only) 19-20\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs it road legal?\u003c\/h3\u003e\n\u003cp\u003eMilltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.\u003c\/p\u003e\n\u003ch3\u003eDo I need a remap?\u003c\/h3\u003e\n\u003cp\u003eNo. It fits behind the factory catalytic converter, so no software changes are needed.\u003c\/p\u003e\n\u003ch3\u003eDoes it keep the factory catalytic converter?\u003c\/h3\u003e\n\u003cp\u003eYes. It fits behind the factory catalytic converter, which stays in place.\u003c\/p\u003e\n\u003ch3\u003eHow long does it take to fit?\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes approx. 1 to 1.5 hours.\u003c\/p\u003e\n\u003ch3\u003eWhat is it made from?\u003c\/h3\u003e\n\u003cp\u003eT304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.\u003c\/p\u003e\n\u003ch3\u003eIs there a warranty?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Non-Resonated \/ GT-90 Burnt Titanium","offer_id":56392761803137,"sku":"MIL-SSXBM1049","price":1883.47,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ JET-90 Carbon Fibre","offer_id":56392761835905,"sku":"MIL-SSXBM1045","price":1682.31,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Cerakote Black","offer_id":56392761868673,"sku":"MIL-SSXBM1047","price":1656.73,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Polished","offer_id":56392761901441,"sku":"MIL-SSXBM1046","price":1571.57,"currency_code":"GBP","in_stock":true},{"title":"Non-Resonated \/ GT-90 Titanium","offer_id":56392761934209,"sku":"MIL-SSXBM1048","price":1794.28,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ GT-90 Burnt Titanium","offer_id":56392761966977,"sku":"MIL-SSXBM1043","price":1755.02,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ JET-90 Carbon Fibre","offer_id":56392761999745,"sku":"MIL-SSXBM1044","price":1553.86,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ GT-90 Cerakote Black","offer_id":56392762032513,"sku":"MIL-SSXBM1041","price":1528.29,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ GT-90 Polished","offer_id":56392762065281,"sku":"MIL-SSXBM1040","price":1443.13,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ GT-90 Titanium","offer_id":56392762098049,"sku":"MIL-SSXBM1042","price":1665.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXBM1049_1.jpg?v=1791891978"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/collections\/bmw-1-series.jpg?v=1791897579","url":"https:\/\/milltekexhaustshop.com\/collections\/bmw-1-series-performance-exhaust-systems.oembed","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}