Description:

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, Valvetronic’s 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.

Features:

Fitment: 2017–2024 Audi S4 (B9); 2017–2024 Audi S5 (B9); (Doesn't fit Sportback models)
Engine: 3.0L
Material: T304 Stainless Steel
System Type: Valved cat-back exhaust system
Tips: Brushed 3.5" Tips
Finish: Brushed stainless steel
Tubing Diameter: Full mandrel-bent 2.5" T304 stainless steel
Valves: Electronic, remote-controlled
Control: Switch between aggressive and refined sound instantly
Valves Open: Aggressive tone with rich midrange and sharp overrun crackles on deceleration
Valves Closed: Quiet, refined, and OEM-like for comfortable daily driving
Weight Savings: 16.4 lb lighter than the OEM exhaust system
Included: Full T304 stainless steel valved exhaust system; Electronic exhaust valves with key fob remote system; All necessary clamps and hardware
Installation: Direct-fit for sedan models. Coupe models require modification to shorten the mid-section for proper fitment
Product Weight: 89 lbs
Manufacturer Part Number: AUD.B9.S4.VSES.BR.BRSH
Made In: China
Warranty: Lifetime of Ownership limited warranty on 304 stainless steel and titanium exhaust tubes and welds (including penetrating rust); 3-year limited warranty on mufflers and resonators; 1-year limited warranty on valves, vacuum pots, remotes, electronics and tip finish (original purchaser only)

Sound Clip 1

Sound Clip 2

Valve Troubleshooting Guide

Valvetronic Warranty & Returns Policy

SKU’S:
AUDB9S4VSESBRBRSH