{"product_id":"milltek-cat-back-exhaust-audi-tt-180-225-quattro-coupe-roadster-98-06","title":"Milltek Cat Back Exhaust Audi TT 180 225 Quattro Coupe Roadster 98-06","description":"\u003ch2\u003eMilltek Cat-back Exhaust for Audi TT 180\/225 quattro Coupe \u0026amp; Roadster (1998-2006) – Sharper Sound, Reduced Back Pressure\u003c\/h2\u003e\n\u003cp\u003eThis is Milltek's cat-back system for the Audi TT 180\/225 quattro Coupe \u0026amp; Roadster. 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 race non-resonated or race resonated versions and 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\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\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-100 Black, GT-100 Titanium, GT-100 Polished\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\u003eAudi TT 180\/225 quattro Coupe \u0026amp; Roadster (1998-2006)\u003c\/li\u003e\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. 1 to 1.5 hours. \u003cstrong\u003ePlease note:\u003c\/strong\u003e +0.2 for valance fitting on required models. Some versions: 3-inch Race System. Non-resonated (louder). Black Velvet GT100 Tips. 180 models may require dual-outlet rear valance from the 225 model. Some versions: 3-inch Race System. Non-resonated (louder). Lightweight Titanium GT100 Tips. 180 models may require dual-outlet rear valance from the 225 model. Some versions: 3-inch Race System. Non-resonated (louder). Polished GT100 Tips. 180 models may require dual-outlet rear valance from the 225 model. Some versions: 3-inch Race System. Resonated (quieter). Black Velvet Tips. 180 models may require dual-outlet rear valance from the 225 model. 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-decat-downpipe-audi-tt-180-225-quattro-coupe-roadster-98-06\"\u003eMilltek Downpipe \u0026amp; De-cat Audi TT 180 225 Quattro Coupe Roadster 98-06\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. Race versions are the loudest and are intended for track use.\u003c\/p\u003e\n\u003ch3\u003eWhich tailpipe finishes are available?\u003c\/h3\u003e\n\u003cp\u003eYou can choose from: GT-100 Black, GT-100 Titanium, GT-100 Polished. The finish is cosmetic and does not change the sound.\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. Note: +0.2 for valance fitting on required models.\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-100 Black","offer_id":56392753316225,"sku":"MIL-SSXAU430","price":892.68,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ GT-100 Titanium","offer_id":56392753348993,"sku":"MIL-SSXAU428","price":1045.84,"currency_code":"GBP","in_stock":true},{"title":"Race, Non-Resonated \/ GT-100 Polished","offer_id":56392753381761,"sku":"MIL-SSXAU429","price":892.71,"currency_code":"GBP","in_stock":true},{"title":"Race, Resonated \/ GT-100 Black","offer_id":56392753414529,"sku":"MIL-SSXAU425","price":951.46,"currency_code":"GBP","in_stock":true},{"title":"Race, Resonated \/ GT-100 Titanium","offer_id":56392753447297,"sku":"MIL-SSXAU427","price":1104.62,"currency_code":"GBP","in_stock":true},{"title":"Race, Resonated \/ GT-100 Polished","offer_id":56392753480065,"sku":"MIL-SSXAU426","price":951.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/3232\/7161\/files\/SSXAU430_1.jpg?v=1791891773","url":"https:\/\/milltekexhaustshop.com\/products\/milltek-cat-back-exhaust-audi-tt-180-225-quattro-coupe-roadster-98-06","provider":"Milltek Exhaust Shop","version":"1.0","type":"link"}