The Audi B9 S4 and S5, powered by the EA839 3.0L V6, have impressive performance potential-but the stock exhaust hides much of this engine's true character. The Valvetronic Designs Full Valved Exhaust System unleashes its voice, delivering an aggressive, motorsport-inspired tone when desired, and stock-like refinement when needed.

Unlike typical setups requiring multiple components from different vendors, our system is engineered as a complete solution-from the OEM or aftermarket downpipe all the way to the exhaust tips. This single-package design eliminates the need for mixing and matching resonator sections or axle-backs from other brands, ensuring perfect fitment, seamless performance, and consistent sound quality. With valves open, expect a bold exhaust note, pronounced overrun crackles, and a commanding presence.

With valves closed, the car returns to quiet factory manners, with zero drone when paired with the OEM downpipe. For those upgrading from the V8-powered B6 or B7 S4, our system delivers the level of engagement and emotional sound you've been missing-ensuring your B9 ownership experience is just as exciting.

Details:

• T304 stainless steel for long-term durability and corrosion resistance.
• Full mandrel-bent 2.5 Inch T304 stainless steel
• Electronic Valve Control: Switch between aggressive and refined sound instantly.
• 16.4 lb lighter than the OEM exhaust system.
• Paired With Single Wall Brushed Tips

What's Included

• Valved exhaust system
• Electronic exhaust valves with key fob remote system
• Brushed Valvetronic tips

Installation Notes

• Bolt on Installation for sedan models.
• Coupe models require modification to shorten the mid-section for proper fitment.

Features and Components

• One-Piece System Design: Eliminates the need for mixing components from multiple vendors
• Electronic Valve Control: Switch between aggressive and refined sound instantly
• Mandrel-Bent Construction: Maximizes flow for improved throttle response and power

Fits

• 2018-2024 Audi S4, S5