{"product_id":"milltek-sport-secondary-catalyst-bypass-pipe-audi-b9-rs4rs5","title":"Milltek Sport Secondary Catalyst Bypass Pipe – Audi B9 RS4\/RS5 (2017 on)","description":"\u003ch6\u003eDescription\u003c\/h6\u003e\n\u003cp\u003eThe Milltek Sport secondary catalyst bypass pipe for the Audi B9 RS4\/RS5 (2017 on) replaces the factory secondary catalytic converter with a straight pipe. It is built from 3\" (76.2mm) T304 stainless steel pipework by Milltek Sport in Derbyshire, and comes with the clamps, gaskets and hangers it needs.\u003c\/p\u003e\n\u003ch3\u003eFrom Milltek Sport\u003c\/h3\u003e\u003cp\u003eThe part is used to bypass the catalyst from the exhaust to create a ‘Decat’ system. Eliminating the catalyst will greatly enhance the gas-flow and the performance, adding significant Hp to your vehicle by removing the density of the catalyst in which exhaust gases are pushed through. - This product is intended for motorsport use only and requires Stage 2 ECU remap.\u003c\/p\u003e\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLH Decat Downpipe with Heat Wrap Protection\u003c\/li\u003e\n\u003cli\u003eRH Decat Downpipe with Heat Wrap Protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCheck before you order\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNeeds a Stage 2 ECU remap to run correctly.\u003c\/li\u003e\n\u003cli\u003eFor cars fitted with a petrol particulate filter (GPF\/OPF) from the factory.\u003c\/li\u003e\n\u003cli\u003ePick the \"Connects to\" option that matches the exhaust behind it: the standard (OE) one or a Milltek system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRoad use\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMotorsport and off-road use only.\u003c\/strong\u003e This part is not EC approved. It changes or removes emissions equipment, so it is not legal on the public road and the car will fail an MOT emissions test. It also needs ECU calibration to run correctly.\u003c\/p\u003e\n\u003ch3\u003eLead time\u003c\/h3\u003e\u003cp\u003eMilltek Sport make every system in Derbyshire. The dispatch estimate next to the price is updated every morning from Milltek's live stock and build dates, and changes with the option you pick. If there is any delay on your order we will tell you within 24 hours.\u003c\/p\u003e\n\u003ch6\u003eProduct Details\u003c\/h6\u003e\n\u003cdiv\u003e\n\u003cb\u003eBrand: \u003c\/b\u003eMilltek Sport\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eSystem type: \u003c\/b\u003eSecondary Catalyst Bypass Pipe\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003ePipe bore: \u003c\/b\u003e3\" (76.2mm)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eMaterial: \u003c\/b\u003eT304 stainless steel\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eEC approved: \u003c\/b\u003eNo\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eECU remap needed: \u003c\/b\u003eYes\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eFitting time: \u003c\/b\u003e3–4 hours (Milltek's figure, including removing the factory part)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eShipping: \u003c\/b\u003e1 box, 100 × 40 × 30 cm, about 10 kg\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eMade in: \u003c\/b\u003eDerbyshire, United Kingdom\u003c\/div\u003e\n\u003ch6\u003eVehicle Fitment\u003c\/h6\u003e\u003ctable style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003eEngine code\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA4\u003c\/td\u003e\n\u003ctd\u003eRS4 TFSi quattro\u003c\/td\u003e\n\u003ctd\u003e450 hp\u003c\/td\u003e\n\u003ctd\u003eDECA\u003c\/td\u003e\n\u003ctd\u003e2017–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA4\u003c\/td\u003e\n\u003ctd\u003eRS4 TFSI quattro\u003c\/td\u003e\n\u003ctd\u003e471 hp\u003c\/td\u003e\n\u003ctd\u003eDECC\u003c\/td\u003e\n\u003ctd\u003e2024–2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA5\u003c\/td\u003e\n\u003ctd\u003eRS5 TFSI quattro\u003c\/td\u003e\n\u003ctd\u003e450 hp\u003c\/td\u003e\n\u003ctd\u003eDECA\u003c\/td\u003e\n\u003ctd\u003e2017–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA5\u003c\/td\u003e\n\u003ctd\u003eRS5 TFSI quattro\u003c\/td\u003e\n\u003ctd\u003e450 hp\u003c\/td\u003e\n\u003ctd\u003eDECA\u003c\/td\u003e\n\u003ctd\u003e2018–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA5\u003c\/td\u003e\n\u003ctd\u003eRS5 TFSI quattro\u003c\/td\u003e\n\u003ctd\u003e471 hp\u003c\/td\u003e\n\u003ctd\u003eDECC\u003c\/td\u003e\n\u003ctd\u003e2024–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA5\u003c\/td\u003e\n\u003ctd\u003eRS5 TFSI quattro\u003c\/td\u003e\n\u003ctd\u003e471 hp\u003c\/td\u003e\n\u003ctd\u003eDECC\u003c\/td\u003e\n\u003ctd\u003e2024–2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eMilltek list this part for: RS4 \u0026gt; B9 2.9 V6 Turbo Avant (Non OPF\/GPF Models) \u0026gt; 2018 and later; RS5 \u0026gt; B9 2.9 V6 Turbo Coupe (Non OPF\/GPF Models) \u0026gt; 2017 and 2019; RS5 \u0026gt; B9 2.9 V6 Turbo Sportback (Non-OPF\/GPF Models) \u0026gt; 2018 and 2019; RS5 \u0026gt; B9.5 2.9 V6 Turbo Coupe (Non OPF Models) \u0026gt; 2019 and Later; RS5 \u0026gt; B9.5 2.9 V6 Turbo Sportback (Non OPF Models) \u0026gt; 2019 and Later.\u003c\/p\u003e\n\u003ch6\u003eInstallation Guide\u003c\/h6\u003e\u003cp\u003eWe recommend fitting by a garage or exhaust specialist. Milltek allow 3–4 hours including removing the factory part.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0511\/6700\/2795\/files\/milltek-fitting-ssxau816.pdf\" target=\"_blank\" rel=\"noopener\"\u003eMilltek fitting instructions (PDF)\u003c\/a\u003e\u003c\/p\u003e","brand":"Milltek Sport","offers":[{"title":"Default Title","offer_id":56538016874875,"sku":"MIL-SSXAU816","price":1682.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/6700\/2795\/files\/milltek-secondary-catalyst-bypass-pipe-audi-b9-r-01.jpg?v=1792888187","url":"https:\/\/hazmotorsport.co.uk\/products\/milltek-sport-secondary-catalyst-bypass-pipe-audi-b9-rs4rs5","provider":"HAZ MOTORSPORT","version":"1.0","type":"link"}