{"product_id":"milltek-non-resonated-cat-back-for-audi-b9-s5-sportback-carbon-fibre-tips-ssxau1117","title":"Milltek Non-Resonated Cat-Back for Audi B9 S5 Sportback, Carbon Fibre Tips","description":"\u003cp\u003eMilltek Non-Resonated Cat-Back exhaust system for Audi B9 S5 Sportback with Sports Diff and factory brace bars. Direct bolt-on replacement using OEM hangers and mounting points-no modification required. Our loudest system in the B9 S5 lineup, engineered to deliver maximum sound character and measurable performance gains on the dyno.\u003c\/p\u003e\n\u003cp\u003eHand-finished T304L stainless steel construction with mandrel-bent piping throughout. 2.5\" diameter main pipe flows to 4\" GT-100 round tips, or upgrade to quad oval tips in polished stainless or Cerakote Black finish. Non-resonated design eliminates the mid-range resonance point for full-throttle presence; track-focused tuning suitable for closed-course use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFitment: Audi B9 S5 Sportback (2017-present) with Sports Differential and Factory Brace Bars\u003c\/li\u003e\n\u003cli\u003eMaterial: T304L stainless steel, hand-finished\u003c\/li\u003e\n\u003cli\u003ePipe diameter: 2.5\" mandrel-bent\u003c\/li\u003e\n\u003cli\u003eTip options: 4\" GT-100 round or quad oval (polished or Cerakote Black)\u003c\/li\u003e\n\u003cli\u003eInstallation: Direct OEM fitment, no welding or modification\u003c\/li\u003e\n\u003cli\u003eSound character: Full-throttle note with minimal drone elimination\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e Engineered in-house and dyno-proven. \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\u003e2018-2025 Audi S5 Premium Plus\u003c\/li\u003e\n\u003cli\u003e2018-2025 Audi S5 Prestige\u003c\/li\u003e\n\u003cli\u003e2019-2025 Audi S5 Premium\u003c\/li\u003e\n\u003cli\u003e2026 Audi S5 Base\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150502785310,"sku":"MILSSXAU1117","price":3875.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/ssxau1117.jpg?v=1791250765","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-non-resonated-cat-back-for-audi-b9-s5-sportback-carbon-fibre-tips-ssxau1117","provider":"Signature Autohaus","version":"1.0","type":"link"}