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  • Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
Audi B9 S4 / S5 Valved Sport Exhaust System
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Audi B9 S4 / S5 Valved Sport Exhaust System

Valvetronic Designs
AUD.B9.S4.VSES.BR.BRSH
Motor Vehicle Exhaust
$2,499.99

52 Units In Stock and Available for Purchase

Inventory may change and will be confirmed once your order has been processed.

This item ships as early as the same or next business day. Please allow up to 7–10 business days for processing in some cases.

Lead times are estimated and subject to change.

$2,499.99
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Audi B9 S4 / S5 Valved Sport Exhaust System
Valved Sport Exhaust System / (4) Brushed Steel (3.5 Outlet) - $2,499.99
Description

Audi B9 S4 & S5 Valved Exhaust System

Full T304 Stainless Steel System with Electronic Valve Control

Overview

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.

Why It Works

  • 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.

Sound & Control

  • Valves Open: Aggressive tone with rich midrange and sharp overrun crackles on deceleration.

  • Valves Closed: Quiet, refined, and OEM-like for comfortable daily driving.

  • No Drone: When paired with the OEM downpipe, cabin comfort is unaffected.

Construction & Options

  • Material: T304 stainless steel for long-term durability and corrosion resistance.

  • Weight Savings: 16.4 lb lighter than the OEM exhaust system.

  • Craftsmanship: Precision TIG welds and mandrel bends for optimal flow and strength.

  • Tips: Includes premium exhaust tips for a finished, performance-oriented look.

Fitment

  • 2017–2024 Audi S4 (B9)

  • 2017–2024 Audi S5 (B9)

    (Doesn't fit Sportback models)

Installation Notes

  • Direct-fit for sedan models.

  • Coupe models require modification to shorten the mid-section for proper fitment. Contact info@valvetronic.com for guidance.

What’s Included

  • Full T304 stainless steel valved exhaust system

  • Electronic exhaust valves with key fob remote system

  • All necessary clamps and hardware

Specifications

  • Tubing: Full mandrel-bent T304 stainless steel

  • Valves: Electronic, remote-controlled

  • Weight Savings: 16.4 lb lighter than OEM

  • Finish: Brushed stainless steel



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