{"product_id":"milltek-race-large-bore-downpipe-hi-flow-sports-cat-for-audi-tt-mk1-225-quattro-ssxau431","title":"Milltek Race Large Bore Downpipe \u0026 Hi-Flow Sports Cat for Audi TT MK1 225 Quattro","description":"\u003cdiv style=\"border:2px solid #E12828;border-left:6px solid #E12828;background:#fff5f5;padding:14px 18px;margin:0 0 20px 0;\"\u003e\n\u003cp style=\"margin:0 0 6px 0;color:#E12828;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;\"\u003eImportant Fitment Note\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli\u003e\u003cstrong\u003eFor use only with the Milltek 3-inch Race System.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRequires Stage 2 ECU remap.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits 225 model only.\u003c\/strong\u003e Possible clearance issues on Roadster due to additional bracing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eMilltek Race Large Bore Downpipe and Hi-Flow Sports Cat for the Audi TT MK1 225 Quattro\u003c\/h3\u003e\u003cp\u003eA 3-inch large bore downpipe with a 200 CPSI hi-flow sports catalyst, built to pair with the Milltek 3-inch Race Cat-Back on the TT MK1 1.8T 225 Quattro (1998 to 2006). It reduces restriction after the turbo for stronger power and torque once the car is mapped to Stage 2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLarge bore flow: 3-inch (76.20mm) pipework from the turbo back.\u003c\/li\u003e\n\u003cli\u003eHi-flow sports catalyst: 200 CPSI (cells per square inch) cat in place of the restrictive OE unit.\u003c\/li\u003e\n\u003cli\u003eRace product: designed for use with the Milltek 3-inch Race Cat-Back and a Stage 2 ECU remap.\u003c\/li\u003e\n\u003cli\u003eBuilt to last: T304L stainless steel construction.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaterial: T304L stainless steel\u003c\/li\u003e\n\u003cli\u003ePipe Diameter: 3.0\" (76.20mm)\u003c\/li\u003e\n\u003cli\u003eCatalyst: 200 CPSI hi-flow sports catalyst\u003c\/li\u003e\n\u003cli\u003eKit contents: large bore downpipe assembly (MSAU607) and hi-flow sports catalyst (MSAU608)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits: Audi TT MK1 1.8T 225 Quattro Coupe, 1998 to 2006.\u003c\/li\u003e\n\u003cli\u003eRoadster: possible clearance issues due to additional bracing.\u003c\/li\u003e\n\u003cli\u003eDoes not fit the TT MK1 150 or 180 models.\u003c\/li\u003e\n\u003cli\u003eDoes not fit the OE cat-back or non-race Milltek cat-backs. Use with the Milltek 3-inch Race Cat-Back only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhy Choose Milltek?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eWith decades of experience in performance exhaust systems, Milltek is a trusted name among automotive enthusiasts, and every system is engineered for precise fit and consistent performance.\u003c\/p\u003e\n\u003cp\u003eDesigned and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.\u003c\/p\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2000-2006 Audi TT Quattro Base\u003c\/li\u003e\n\u003cli\u003e2002 Audi TT Quattro ALMS Edition\u003c\/li\u003e\n\u003cli\u003e2006 Audi TT Quattro Special Edition\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150521823518,"sku":"MILSSXAU431","price":1243.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXAU431_1.jpg?v=1791251808","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-race-large-bore-downpipe-hi-flow-sports-cat-for-audi-tt-mk1-225-quattro-ssxau431","provider":"Signature Autohaus","version":"1.0","type":"link"}