Valved Catback Exhaust for Audi S4 (B8.5) (2013–2016)

This valved catback exhaust system allows you to switch anytime between quiet OEM-level comfort and a stronger, more aggressive performance tone. Constructed from premium 304 stainless steel with precision TIG welding, it offers long-term durability and a clean factory-like finish. The system is fully bolt-on — no cutting or welding required — making installation straightforward for most exhaust shops. Designed for the facelift B8.5 3.0T supercharged V6, it improves flow and throttle response while providing a deeper and sharper exhaust note when the valve is open.

Fitment: Compatible with Audi S4 (B8.5 Platform, 2013–2016), sedan and Avant. Fitment can be confirmed using VIN or a rear exhaust photo if needed.

What’s Included:

Mid-pipe + rear valved catback system

Mounting hardware and clamps

Wireless valve controller or OEM-style valve integration (depending on configuration)

Sound Characteristics:

Cold Start: deeper and more pronounced tone

Valve Open: loud, sporty, and performance-oriented sound

Valve Closed: close to OEM comfort, ideal for daily commuting and late-night use

Shipping: Ships directly from our partner factory. Estimated delivery: 2–5 weeks.

Warranty: If the product arrives damaged or defective, replacement parts will be provided.