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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
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Audi B9 S4 / S5 Valved Sport Exhaust System

Sale price
$2,499.99
Regular price
$3,499.99

|OR|

🔥 You Save 29%
CONFIGURATION: Valved Sport Exhaust System
TIPS: (4) Brushed Steel (3.5 Outlet)

Audi B9 S4 / S5 Valved Sport Exhaust System

CONFIGURATION
TIPS
Price
Valved Sport Exhaust System (4) Brushed Steel (3.5 Outlet)
$2,499.99
$3,499.99
Valved Sport Exhaust System (4) Burnt (3.5 Outlet)
$2,499.99
$3,499.99
Valved Sport Exhaust System (4) Black (3.5 Outlet)
$2,499.99
$3,499.99
Valved Sport Exhaust System (4) Carbon Fiber 1x1 (3.5 Outlet)
$2,499.99
$3,499.99
Valved Sport Exhaust System (4) Forged Carbon Fiber (3.5 Outlet)
$2,499.99
$3,499.99
Compare product options
📞 Price too high or questions before ordering? Call/text us at 475-227-5381

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

 



Audi B9 S4 / S5 Valved Sport Exhaust System

Audi B9 S4 / S5 Valved Sport Exhaust System

Valved Sport Exhaust System / (4) Brushed Steel (3.5 Outlet)

$2,499.99
$3,499.99
Valved Sport Exhaust System / (4) Brushed Steel (3.5 Outlet)

Questions?

WE HAVE ANSWERS

How long til' I get my order?

Small items arrive to you in under 1 week

Larger products like full suspension kits must ship freight and can take 1-3 Weeks

Are Installation Instructions Included?

Instructions are included for most parts that require any sort of knowledge to install.

Here's what to do if your parts come WITHOUT instructions:

1. Some parts are genuinely common sense on how they get installed

2. If you can't figure it out on your own, YOUTUBE IS YOUR FRIEND! Our founder started this company from learning how to build headlights off a YouTube Video

3. If there are no videos on YouTube, or instructions anywhere on Google then please CALL OR EMAIL US and we will guide you through or get you instructions from the manufacturer

4. Doing installs on your own is always fun, but sometimes, it isn't. Always consider having your parts professionally installed

ALWAYS CONSIDER US. We sold you the parts, let us install them at THE LAB in Connecticut. We offer enclosed and open cross country transportation.

Of course you won't want to spend thousands on transportation to install lug nuts or emblems but if you are spending a LOT of money on parts, you may just want to send the car our way

What is your return policy if the part doesn’t fit or isn’t what I expected?

If the part was NOT installed, we accept returns within 14 days of delivery.

If the part WAS installed (or attempted installation), we cannot accept a return.

Do your parts come with a warranty?

All parts come with Manufacturer Warranty! Each manufacturer has different warranties so we suggest reading up on their warranty policy before ordering.

I found a better price somewhere else, can you beat it?

YES! If you come across a competitor with a lower advertised price than us, we will BEAT it by at LEAST 1%. Please contact us with proof of the lower priced product.

Do you give out discounts or sponsorships?

NO! We do not give out discounts or do sponsorships. You can get 5% OFF your first order by signing up for text & email notifications. OR just wait until our BLACK FRIDAY Sale that happens once a year.

See It IRL

REAL CUSTOMERS, REAL BUILDS

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