{"product_id":"milltek-resonated-cat-back-exhaust-audi-b9-s4-s5-polished-tips-ssxau644","title":"Milltek Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Polished Tips","description":"\u003cp\u003eMilltek Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (non-sport differential models). Direct factory fitment replacement using OEM hangers, no modification required. 2.50\" (63.5mm) mandrel-bent T304L stainless steel construction with quad GT-90 polished tips.\u003c\/p\u003e\n\u003cp\u003eEngineered tone character balances sportier note with refinement-resonated design targets OE resonance points for OE+ sound profile without excessive drone. T304Lstainless steel resists corrosion and thermal stress. CNC-formed joints and hand-finished construction. Dyno-proven improved exhaust flow supports modest performance gains across the power band.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi S4 B9 3.0L Turbo V6 Saloon\/Sedan \u0026amp; Avant (non-sport differential) 2016+\u003c\/li\u003e\n\u003cli\u003eAudi S5 B9 3.0L Turbo V6 Sportback (non-sport differential) 2017+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e Cat-back design: replaces factory exhaust from rear of secondary catalytic converter rearward. OEM valves and electronic controls remain unaffected. Fits stock suspension and body. \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","brand":"Milltek","offers":[{"title":"Default Title","offer_id":51360553533663,"sku":"SSXAU644","price":3756.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8496\/9183\/files\/SSXAU644_1.jpg?v=1789002571","url":"https:\/\/egtuning.com\/products\/milltek-resonated-cat-back-exhaust-audi-b9-s4-s5-polished-tips-ssxau644","provider":"Egor's Garage Tuning ","version":"1.0","type":"link"}