{"product_id":"milltek-non-resonated-cat-back-exhaust-for-audi-b9-s4-s5-polished-tips-ssxau655-ssxau655","title":"Milltek Non-Resonated Cat-Back Exhaust for Audi B9 S4 S5, Polished Tips (SSXAU655)","description":"\u003cp\u003eMilltek Non-Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (Non Sport Diff models). Direct factory fitment using OEM hangers; no modification required. 2.50\" (63.50mm) mandrel-bent T304L stainless steel pipe with quad GT-90 polished tips.\u003c\/p\u003e\n\u003cp\u003eHand-finished T304L stainless construction resists corrosion and thermal cycling. Non-resonated design eliminates factory silencer constraints, tuning the exhaust note for full-throttle character without drone at cruise. Dyno-tested for measurable flow improvement over OEM.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi S4 3.0 Turbo V6 (TFSI) B9 Saloon\/Sedan - 2016+\u003c\/li\u003e\n\u003cli\u003eAudi S4 3.0 Turbo V6 (TFSI) B9 Avant - 2016+\u003c\/li\u003e\n\u003cli\u003eAudi S5 3.0 Turbo V6 (TFSI) B9 Sportback - 2017+\u003c\/li\u003e\n\u003cli\u003eNon Sport Differential models only\u003c\/li\u003e\n\u003c\/ul\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\u003e2016 Audi S4 Base\u003c\/li\u003e\n\u003cli\u003e2016 Audi S4 Premium Plus\u003c\/li\u003e\n\u003cli\u003e2016 Audi S4 Prestige\u003c\/li\u003e\n\u003cli\u003e2017-2023 Audi S5 Base\u003c\/li\u003e\n\u003cli\u003e2018-2024 Audi S4 Base\u003c\/li\u003e\n\u003cli\u003e2018-2025 Audi S4 Premium Plus\u003c\/li\u003e\n\u003cli\u003e2018-2025 Audi S4 Prestige\u003c\/li\u003e\n\u003cli\u003e2018-2025 Audi S5 Premium Plus\u003c\/li\u003e\n\u003cli\u003e2018-2025 Audi S5 Prestige\u003c\/li\u003e\n\u003cli\u003e2019-2025 Audi S4 Premium\u003c\/li\u003e\n\u003cli\u003e2019-2025 Audi S5 Premium\u003c\/li\u003e\n\u003cli\u003e2026 Audi S4 Base\u003c\/li\u003e\n\u003cli\u003e2026 Audi S5 Base\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150595944734,"sku":"MILSSXAU655","price":3511.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXAU655_1.jpg?v=1791252812","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-non-resonated-cat-back-exhaust-for-audi-b9-s4-s5-polished-tips-ssxau655-ssxau655","provider":"Signature Autohaus","version":"1.0","type":"link"}