{"product_id":"valved-catback-exhaust-for-audi-s4-b8-2009-2012","title":"Valved Catback Exhaust for Audi S4 (B8) (2009–2012)","description":"\u003ciframe width=\"100%\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/DGeyfWBOP3U\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen\u003e\n\u003c\/iframe\u003e\n\n\n\n\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eThis valved catback exhaust system allows you to switch anytime between quiet OEM-style comfort and a louder, more aggressive performance tone. Built from high-grade 304 stainless steel with precision TIG welding, it provides excellent durability, corrosion resistance, and a clean premium finish. The system is fully bolt-on — no cutting or welding required — making installation simple for most exhaust shops. Designed specifically for the 3.0T supercharged V6, it enhances exhaust flow and throttle response, producing a deeper and sportier sound compared to the factory system when the valve is open.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFitment: Compatible with Audi S4 (B8 Platform, 2009–2012), sedan and Avant. Fitment can be confirmed with VIN or a rear exhaust photo if needed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhat’s Included:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMid-pipe + rear valved catback system\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMounting hardware and clamps\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWireless valve controller or OEM-style valve integration (depending on setup)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSound Characteristics:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCold Start: deeper and more noticeable tone\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValve Open: loud, sporty, and performance-focused exhaust note\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValve Closed: close to OEM comfort for daily driving and late-night use\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eShipping: Ships directly from our partner factory. Estimated delivery: 2–5 weeks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWarranty: If the product arrives damaged or defective, replacement parts will be provided.\u003c\/span\u003e\u003c\/p\u003e","brand":"NT Auto Performance","offers":[{"title":"Default Title","offer_id":45407189303469,"sku":null,"price":915.04,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/5156\/0365\/files\/2025-12-04_5.00.17.png?v=1764896496","url":"https:\/\/ntauto.ca\/products\/valved-catback-exhaust-for-audi-s4-b8-2009-2012","provider":"NT Auto Performance","version":"1.0","type":"link"}