{"product_id":"milltek-cat-back-exhaust-volkswagen-golf-mk4-gti-1-8t-98-04","title":"Milltek Cat Back Exhaust Volkswagen Golf Mk4 GTI 1.8T 98-04","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Seat Leon 1.8T Sport and Cupra 180PS (2000-2005) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Volkswagen Golf Mk4 GTI 1.8T. 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, 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 63.5mm (2.5\")\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\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\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\n\u003cli\u003eSeat Leon 1.8T Sport and Cupra 180PS (2000-2005)\u003c\/li\u003e\n\u003cli\u003eSeat Leon Cupra 1.9 TDi 90PS\/110PS\/150PS (2000-2005)\u003c\/li\u003e\n\u003cli\u003eVolkswagen Golf Mk4 1.9 TDI PD and non-PD (2000-2004)\u003c\/li\u003e\n\u003cli\u003eVolkswagen Golf Mk4 GTI 1.8T (1998-2004)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot every version fits every car in this list. Check the fitment shown for the option you select.\u003c\/p\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\u003eSome versions: Non-resonated. May require 4-Motion rear valance (part number 1J6807521C) from your VW dealer. Some versions: Resonated. May require 4-Motion rear valance (part number 1J6807521C) from your VW 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\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-80 Polished, Discreet Polished. The finish is cosmetic and does not change the sound.\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\u003eWill it fit the Seat Leon Cupra 1.9 TDi 90PS\/110PS\/150PS?\u003c\/h3\u003e\n\u003cp\u003eYes. Milltek lists this part for the Seat Leon Cupra 1.9 TDi 90PS\/110PS\/150PS 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\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":"Non-Resonated \/ GT-80 Polished","offer_id":56392959263105,"sku":"MIL-SSXVW052","price":529.73,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ Discreet Polished","offer_id":56392959295873,"sku":"MIL-SSXVW056","price":576.14,"currency_code":"GBP","in_stock":true},{"title":"Resonated \/ GT-80 Polished","offer_id":56392959328641,"sku":"MIL-SSXVW053","price":589.21,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXVW052_1_30245888-094b-41bf-9bdb-763882ba2667.jpg?v=1791895083","url":"https:\/\/milltekexhaustshop.com\/products\/milltek-cat-back-exhaust-volkswagen-golf-mk4-gti-1-8t-98-04","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}