{"product_id":"milltek-resonated-cat-back-exhaust-for-audi-b9-s4-s5-burnt-titanium-tips-ssxau647-ssxau647","title":"Milltek Resonated Cat-Back Exhaust for Audi B9 S4 S5, Burnt Titanium Tips (SSXAU647)","description":"\u003cp\u003eThe Milltek Resonated Cat-Back Exhaust System is a direct factory replacement for the Audi B9 S4 and S5, engineered to enhance exhaust flow and refine the OE+ sound character without aggressive resonance. This system uses 2.50\" (63.50mm) mandrel-bent T304L stainless steel throughout, hand-finished for durability and corrosion resistance.\u003c\/p\u003e\n\u003cp\u003eInstallation requires no modification - the system uses OEM hangers and integrates seamlessly with factory components. The resonated design tuned to eliminate drone at cruising speeds while delivering a more pronounced full-throttle note. Quad GT-90 burnt titanium trims are included as standard.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi S4 3.0 Turbo V6 B9 Saloon\/Sedan \u0026amp; Avant (non-sport differential models) 2016+\u003c\/li\u003e\n\u003cli\u003eAudi S5 3.0 Turbo V6 B9 Sportback (non-sport differential models) 2017+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e Engineered in-house and tested to deliver measurable flow improvements and refined acoustic character. \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\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":60150592602398,"sku":"MILSSXAU647","price":4659.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXAU647_1.jpg?v=1791252749","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-resonated-cat-back-exhaust-for-audi-b9-s4-s5-burnt-titanium-tips-ssxau647-ssxau647","provider":"Signature Autohaus","version":"1.0","type":"link"}