{"product_id":"milltek-non-resonated-cat-back-exhaust-for-audi-b9-s5-coupe-carbon-fibre-tips-ssxau684","title":"Milltek Non-Resonated Cat-Back Exhaust for Audi B9 S5 Coupe, Carbon Fibre Tips","description":"\u003cp\u003eMilltek Non-Resonated Cat-Back Exhaust System for Audi B9 S5 3.0 V6 Turbo Coupe and Cabriolet (Non-Sport Differential models only). Direct factory fitment replacement using OEM hangers, no modification required.\u003c\/p\u003e\n\u003cp\u003eHand-finished T304L stainless steel construction with mandrel-bent 2.50\" (63.50mm) diameter piping. Quad JET-100 carbon fiber trim outlets. Non-resonated design engineered for aggressive full-throttle character and elevated tone at cruising speeds. OEM+ fitment preserves all factory suspension and component clearances.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAudi B9 S5 Coupe (2017-2023) - 3.0L TFSI EA839 engine\u003c\/li\u003e\n\u003cli\u003eAudi B9 S5 Cabriolet (2017-2023) - 3.0L TFSI EA839 engine\u003c\/li\u003e\n\u003cli\u003eNon-Sport Differential models only\u003c\/li\u003e\n\u003cli\u003eCat-back system: retains OEM catalytic converters and secondary cats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e Dyno-proven performance gains with engineered sound character tuned to the B9 S5's flat-plane V6 resonance. \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\u003e2017-2023 Audi S5 Base\u003c\/li\u003e\n\u003cli\u003e2018-2023 Audi S5 Premium Plus\u003c\/li\u003e\n\u003cli\u003e2018-2023 Audi S5 Prestige\u003c\/li\u003e\n\u003cli\u003e2019-2023 Audi S5 Premium\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150600630558,"sku":"MILSSXAU684","price":3874.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXAU684_1.jpg?v=1791253002","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-non-resonated-cat-back-exhaust-for-audi-b9-s5-coupe-carbon-fibre-tips-ssxau684","provider":"Signature Autohaus","version":"1.0","type":"link"}