{"product_id":"milltek-downpipe-audi-rs3-saloon-sedan-400ps-non-opf-gpf-models-2022","title":"Milltek Sport Downpipes \u0026 Cat-Back - 2022-2025 Audi RS3 8Y Sedan","description":"\u003cp\u003eThese Milltek Sport parts fit the 2022-2025 Audi RS3 sedan (8Y) with the 2.5 liter TFSI turbo five. This page carries Milltek parts for the 8Y RS3 sedan: a large-bore 200-cell catted downpipe, catless downpipes, a secondary cat bypass, and three 80 mm cat-back systems. A Milltek hot-side part replaces the restrictive factory section with larger, smoother T304L tubing, so exhaust gas leaves the engine with less resistance. Pick a catted version to keep a catalytic converter in the system, or a catless version for a dedicated track car. Where an option names a Milltek cat-back in parentheses, that version is made to join it. The Audi RS3 8Y parts are T304L stainless steel with mandrel-bent tubing, which keeps the pipe at full size through each bend and resists corrosion for years. They bolt in place of the factory parts with no cutting or welding.\u003c\/p\u003e\u003ch3\u003eHow to Choose\u003c\/h3\u003e\u003cp\u003eChoose the \u003cstrong\u003ePart\u003c\/strong\u003e you need. \u003cstrong\u003eSecondary Cat Bypass\u003c\/strong\u003e replaces the secondary catalytic converters with a straight pipe (race product); it is not needed with a Milltek turbo-back system, and not every car has secondary cats, so please check under your car first. \u003cstrong\u003eCatless Downpipe\u003c\/strong\u003e has no catalytic converter; it is for off-road and track use only and needs an ECU remap. \u003cstrong\u003eCatless Downpipe V2\u003c\/strong\u003e is the second version of Milltek's catless downpipe; it is for off-road and track use only and needs an ECU remap. \u003cstrong\u003eCatted 200-Cell Downpipe\u003c\/strong\u003e is a large-bore downpipe with a high-flow 200-cell catalyst; Milltek lists it as a race product and it needs an ECU remap. \u003cstrong\u003e80mm Cat-Back, Non-Resonated\u003c\/strong\u003e is the 80 mm non-resonated system for a bold five-cylinder sound. \u003cstrong\u003e80mm Race Cat-Back, Non-Resonated (Loudest)\u003c\/strong\u003e is the 80 mm race non-resonated system, the loudest option. \u003cstrong\u003e80mm Cat-Back, Resonated (Quieter)\u003c\/strong\u003e is the 80 mm resonated system for a deeper tone with less drone.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e80 mm (3.15 in) T304L stainless steel pipework\u003c\/li\u003e\n\u003cli\u003eMandrel-bent and made to bolt to the factory mounting points\u003c\/li\u003e\n\u003cli\u003eCatted and catless options explained in How to Choose\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThe Milltek part for the version you choose: a downpipe, the left and right secondary cat bypass pipes, or a complete 80 mm cat-back system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#03589c;color:#fff;padding:8px;text-align:left;\"\u003eSpec\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#fff;padding:8px;text-align:left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eMilltek Sport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003ePart numbers (MPN)\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eSecondary Cat Bypass: SSXAU588. Catless Downpipe: SSXAU727. Catless Downpipe V2: SSXAU888. Catted 200-Cell Downpipe: SSXAU726. 80mm Cat-Back, Non-Resonated: SSXAU967. 80mm Race Cat-Back, Non-Resonated (Loudest): SSXAU974. 80mm Cat-Back, Resonated (Quieter): SSXAU966\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eDownpipes \u0026amp; Cat-Back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eT304L stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003ePipe diameter\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003e80 mm (3.15 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eRace product\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eDownpipes and secondary cat bypass: yes, per Milltek (off-road and track use). 80 mm cat-backs: no\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eFitment Notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits the 2022-2025 US-market Audi RS3 sedan (8Y). For 2026 cars, please call us to confirm. Not for the 2017-2020 RS3 8V, which has its own page.\u003c\/li\u003e\n\u003cli\u003eEvery downpipe here fits both the factory and the Milltek cat-back. Because of the turbo wastegate design, a catless downpipe can cause a metallic rattle, according to Milltek.\u003c\/li\u003e\n\u003cli\u003eThe three 80 mm systems replace everything from the particulate filter or cat back; Milltek does not list them as race products.\u003c\/li\u003e\n\u003cli\u003eCatless parts remove the catalytic converter. They are sold for off-road and competition use only and are not legal on public roads in the US.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eQuestions about fitment? Call (310) 231-0292 or text (310) 886-3111.\u003c\/p\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#03589c;color:#fff;padding:8px;text-align:left;\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#fff;padding:8px;text-align:left;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#fff;padding:8px;text-align:left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#fff;padding:8px;text-align:left;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#fff;padding:8px;text-align:left;\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003e2022-2025\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eAudi\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003eRS3 Sedan\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003e8Y\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;\"\u003e2.5L TFSI Turbo I5\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Milltek Sport","offers":[{"title":"Secondary Cat Bypass","offer_id":67999350947991,"sku":"SSXAU588","price":281.04,"currency_code":"USD","in_stock":true},{"title":"Catless Downpipe","offer_id":67999350784151,"sku":"SSXAU727","price":895.9,"currency_code":"USD","in_stock":true},{"title":"Catless Downpipe V2","offer_id":67999350816919,"sku":"SSXAU888","price":1258.85,"currency_code":"USD","in_stock":true},{"title":"Catted 200-Cell Downpipe","offer_id":67999350751383,"sku":"SSXAU726","price":1662.57,"currency_code":"USD","in_stock":true},{"title":"80mm Cat-Back, Non-Resonated","offer_id":67999350849687,"sku":"SSXAU967","price":3074.11,"currency_code":"USD","in_stock":true},{"title":"80mm Race Cat-Back, Non-Resonated (Loudest)","offer_id":67999350882455,"sku":"SSXAU974","price":3143.23,"currency_code":"USD","in_stock":true},{"title":"80mm Cat-Back, Resonated (Quieter)","offer_id":67999350915223,"sku":"SSXAU966","price":3390.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2641\/0682\/files\/ssxau888_1_25a78bb6-75cb-4ef7-9cfc-b6e94bd1276e.jpg?v=1790966741","url":"https:\/\/autotalent.com\/products\/milltek-downpipe-audi-rs3-saloon-sedan-400ps-non-opf-gpf-models-2022","provider":"AutoTalent","version":"1.0","type":"link"}