{"product_id":"stainless-valved-catback-exhaust-system-for-audi-b8-b8-5-s4-s5","title":"Stainless Valved Catback Exhaust System for Audi B8 B8.5 S4 S5","description":"\u003cp\u003eTransform the sound and driving experience of your \u003cstrong\u003eAudi S4 or S5 B8\/B8.5\u003c\/strong\u003e with the \u003cstrong\u003eSTRATEC Valved Exhaust System\u003c\/strong\u003e. Designed for the supercharged V6 platform, this system delivers a \u003cstrong\u003eunique high-pitch tone\u003c\/strong\u003e while retaining deep, aggressive low-end character—creating a sound profile that stands out from traditional setups.\u003c\/p\u003e\n\u003cp\u003eConstructed entirely from \u003cstrong\u003eT304 stainless steel\u003c\/strong\u003e and featuring a \u003cstrong\u003ehigh-pitch X-pipe\u003c\/strong\u003e, the system runs \u003cstrong\u003e2.5-inch tubing from front to rear\u003c\/strong\u003e, enhancing exhaust flow and sound across the entire RPM range. Integrated \u003cstrong\u003evacuum-actuated valves\u003c\/strong\u003e, controlled via an included \u003cstrong\u003ekey fob remote\u003c\/strong\u003e, allow instant switching between refined cruising and an aggressive, motorsport-inspired exhaust note.\u003c\/p\u003e\n\u003ch3\u003eWhy It Works\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Pitch X-Pipe Design:\u003c\/strong\u003e Produces a sharper, more exotic tone while improving exhaust flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVacuum Valve Control:\u003c\/strong\u003e On-demand sound adjustment using the included remote\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMandrel-Bent Tubing:\u003c\/strong\u003e Optimized flow for improved throttle response and power delivery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSound \u0026amp; Control\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eValves Closed:\u003c\/strong\u003e Quiet and refined for daily driving and highway cruising\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eValves Open:\u003c\/strong\u003e Aggressive, high-energy exhaust tone with strong low-end and high-RPM excitement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRemote Control:\u003c\/strong\u003e Instantly operate valves from inside the vehicle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConstruction \u0026amp; Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e T304 stainless steel for durability and corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight Savings:\u003c\/strong\u003e Approx. \u003cstrong\u003e12.3 lbs lighter\u003c\/strong\u003e than factory exhaust\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCraftsmanship:\u003c\/strong\u003e Precision TIG welding and smooth mandrel bends\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTubing Diameter:\u003c\/strong\u003e 2.5\" from front to exhaust tips\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2010–2016 Audi S4 (B8 \/ B8.5)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2010–2016 Audi S5 (B8 \/ B8.5)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bull Boost Performance","offers":[{"title":"Default Title","offer_id":48150491431070,"sku":"721814382433","price":1899.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/6359\/7726\/files\/dsda_2.png?v=1787426267","url":"https:\/\/hughesperformanceproducts.com\/products\/stainless-valved-catback-exhaust-system-for-audi-b8-b8-5-s4-s5","provider":"Hughes Performance Products ","version":"1.0","type":"link"}