{"product_id":"milltek-non-resonated-cat-back-exhaust-audi-b9-s4-s5-brushed-titanium-tips-ssxau657","title":"Non-Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Brushed Titanium Tips | Milltek","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Milltek Non-Resonated Cat-Back Exhaust System is engineered for the Audi B9 S4 and S5 (non-sport differential models). This 2.50\" mandrel-bent system replaces the factory exhaust, delivering enhanced flow, measurable power gains, and a signature aggressive tone without resonance chambers.\u003c\/p\u003e\n\u003cp\u003eConstructed from T304L stainless steel and hand-finished with quad GT-90 titanium trims. Direct factory fitment using OEM hangers-no modification required. The non-resonated design eliminates mid-range drone while preserving full-throttle character and presence.\u003c\/p\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003ch3\u003eFitment Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi S4 3.0 TFSI V6 B9 Saloon\/Sedan (non-sport diff) 2016+\u003c\/li\u003e\n\u003cli\u003eAudi S4 B9 Avant (non-sport diff) 2016+\u003c\/li\u003e\n\u003cli\u003eAudi S5 3.0 TFSI V6 B9 Sportback (non-sport diff) 2017+\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\u003ch2\u003eFitment\u003c\/h2\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":68005543706926,"sku":"SSXAU657","price":3534.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/1719\/1726\/files\/SSXAU657_1.jpg?v=1794451875","url":"https:\/\/shopicwp.com\/products\/milltek-non-resonated-cat-back-exhaust-audi-b9-s4-s5-brushed-titanium-tips-ssxau657","provider":"Inner Circle Wheels and Performance","version":"1.0","type":"link"}