{"product_id":"milltek-hjs-tuning-ece-downpipes-bmw-4-series-g82-m4-comp-s58-3-0-turbo-opf-gpf-20","title":"Milltek HJS Tuning ECE Downpipes BMW 4 Series G82 M4 Comp S58 3.0 Turbo OPF\/GPF 20+","description":"\u003ch2\u003eMilltek HJS Tuning ECE Downpipes for BMW 2 Series M2 Coupe (G87 S58 OPF\/GPF Models) (2023 onwards) – Improved Flow, Sports Catalyst\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's HJS Tuning ECE downpipe set for the BMW 4 Series G82 M4 \u0026amp; M4 Competition S58 3.0 Turbo (OPF\/GPF Equipped Cars 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\u003cli\u003e\n\u003cstrong\u003eFitting Time:\u003c\/strong\u003e approx. 5 to 6 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\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 2 Series M2 Coupe (G87 S58 OPF\/GPF Models) (2023 onwards)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series G80\/G81 M3 \u0026amp; M3 Competition S58 3.0 Turbo (OPF\/GPF Equipped Cars Only) inc Touring \u0026amp; XDrive Models (2020 onwards)\u003c\/li\u003e\n\u003cli\u003eBMW 4 Series G82 M4 \u0026amp; M4 Competition S58 3.0 Turbo (OPF\/GPF Equipped Cars Only) (2020 onwards)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF\/GPF Models Only), which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-bmw-2-series-m240i-coupe-g42-xdrive-nas-non-opf-gpf-22\"\u003eMilltek Downpipe \u0026amp; Sports Cat BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF\/GPF Only) 22+\u003c\/a\u003e; the BMW 2 Series M2 Coupé (F87), which needs the \u003ca href=\"\/products\/milltek-hjs-tuning-ece-downpipes-bmw-2-series-m2-coupe-f87-16-18\"\u003eMilltek HJS Tuning ECE Downpipes BMW 2 Series M2 Coupé F87 16-18\u003c\/a\u003e; the BMW 2 Series M240i Coupé (G42 XDrive OPF\/GPF Models Only - Non Hybrid Pre LCI), which needs the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-bmw-2-series-m240i-coupe-g42-xdrive-opf-gpf-non-hybrid-pre-lci-22-25\"\u003eMilltek Downpipe \u0026amp; Sports Cat BMW 2 Series M240i Coupé (G42 XDrive OPF\/GPF - Non Hybrid Pre LCI) 22-25\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eMilltek quotes a fitting time of approx. 5 to 6 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-gpf-opf-bypass-bmw-2-series-m2-coupe-g87-s58-opf-gpf-23\"\u003eMilltek GPF\/OPF Bypass BMW 2 Series M2 Coupe G87 S58 OPF\/GPF 23+\u003c\/a\u003e, \u003ca href=\"\/products\/milltek-cat-back-exhaust-bmw-2-series-m2-coupe-g87-s58-opf-gpf-23\"\u003eMilltek Cat-back Exhaust BMW 2 Series M2 Coupe G87 S58 OPF\/GPF 23+\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWill it fit the BMW 3 Series G80\/G81 M3 \u0026amp; M3 Competition S58 3.0 Turbo (OPF\/GPF Equipped Cars Only) inc Touring \u0026amp; XDrive Models?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the BMW 3 Series G80\/G81 M3 \u0026amp; M3 Competition S58 3.0 Turbo (OPF\/GPF Equipped Cars Only) inc Touring \u0026amp; XDrive Models as well as the other models in the fitment list above.\u003c\/p\u003e\n\u003ch3\u003eDoes it fit the BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF\/GPF Models Only)?\u003c\/h3\u003e\n\u003cp\u003eNo. For that car, choose the \u003ca href=\"\/products\/milltek-sports-cat-downpipe-bmw-2-series-m240i-coupe-g42-xdrive-nas-non-opf-gpf-22\"\u003eMilltek Downpipe \u0026amp; Sports Cat BMW 2 Series M240i Coupé (G42 XDrive - NAS Non OPF\/GPF Only) 22+\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\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. 5 to 6 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":56392781169025,"sku":"MIL-SSXBM1298","price":2902.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU1053_1_7801eef5-5d75-4ce1-bead-c67b417a7ed5.jpg?v=1791892376","url":"https:\/\/milltekexhaustshop.com\/products\/milltek-hjs-tuning-ece-downpipes-bmw-4-series-g82-m4-comp-s58-3-0-turbo-opf-gpf-20","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}