SKU: 21618669602

Audi B9 S4 / S5 Valved Sport Exhaust System

Sale price$1124.99 Regular price$1249.99
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Description

Audi B9 S4 / S5 Valved Sport Exhaust SystemAudi 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 potentialbut the stock exhaust hides much of this engines 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

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)

  • 2018–2024 Audi S5 (B9)


Installation Notes

  • Direct-fit for sedan models.

  • Coupe models require modification to shorten the mid-section for proper fitment. Contact [email protected] for guidance.

  • 100% reversible—return to stock at any time.


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



Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21618669602

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4.6 ★★★★★
Based on 29 reviews
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C
Verified Purchase
Christian Romero
Lexington, US
★★★★★ 4
Hokey religions and ancient weapons are no match for a good blaster at your side, kid
Format: Paperback
Star Wars: The Screaming Citadel is a crossover collection of the main Star Wars comic series and the Doctor Aphra series. The Arc revolves around the Queen of The Screaming Citadel being the only one who can open a relic containing an ancient Jedi master. Aphra then teams up with Luke Skywalker and we have our crossover event. The story itself is good. A queen with parasitic bugs controlling a planet is uncharted territory for Star Wars and it works. There were great action moments, plots painting the Empire in a morally grey light than the traditional evil one. Doctor Aphra Marvel's golden girl character was funny in this and her chemistry with Luke worked. It didn't feel forced like Marvel was trying to use the Original Characters to build-up their new ones. Where this comic fails is the inconsistent art style as this is a collection you get different art with each issue. Its starts of good and then takes a nosedive in the Aphra issue in the volume. Bad art aside Screaming Citadel was an enjoyable crossover. Doctor Aphra is the best new character to come out of this new Marvel Disney run. Screaming Citadel is worth the read it was a nice crossover that delves more into the Fantasy elements of Star Wars and works as Star Wars has been Space Wizards since 1977.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2018
J
Verified Purchase
J.Eaton
Los Angeles, US
★★★★★ 5
What a ride.
Format: Paperback
How these two come together with the rest of the iconic characters is just so fun. Add in a Screaming Citadel and you're in for one hell of a ride. If you love Star Wars, pick it up. It could read as a stand-alone if needed. Part of the Doctor Aphra comics.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2022
B
Verified Purchase
beasterson
Waukegan, US
★★★★★ 5
Absolutely top-knotch
Format: Kindle
9.5/10 This is the pinnacle of Star Wars comic books. A great way to tie in their Indiana Jones character in Aphra and the mainline series to tell an amazing story. Only complaint is a couple of the issues artwork I was not a fan of. I like the more realistic look. Just make sure you read Aphra book 1 and the previous SW books to understand it better. Aphra book 1 being more important
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2018
F
Verified Purchase
Frank Gino
New York, US
★★★★★ 5
Star Wars embraces fantasy
Format: Paperback
This is Star Wars at its' strangest, and that's a very good thing. Luke and co. fighting through what could easily be Dracula's castle is a truly unique experience. I don't wish to say more for fear of spoilers. As a note though you will get more out of this if you've been following the Star Wars and Dr. Aphra comics. However you can get by without that knowledge as well.
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Reviewed in the United States on October 26, 2017
D
Verified Purchase
Doc Watson
Carnegie, US
★★★★★ 3
Gothic Star Wars
Format: Paperback
This trade paperback collects all the issues for the Screaming Citadel story spread over several titles, including the main stay Star Wars series and the Dr Aphra book. As one might expect from a story spread over different titles with different artists and writers, the presentation varies. The art is all over the place. In the Marco Checchetto-drawn initial issue, everyone’s favorite amoral artifact hunter, Dr Aphra, is a striking space vixen. But in the following issues she’s hardly recognizable as the same character--mousier, if still menacing, in her trademark Russian tanker’s hat. To a lesser degree, the same is true for the other characters, including the main SW group. It’s understandable, but a bit disconcerting. The story centers on Dr Aphra, who, in need of a Jedi for one of her typically nefarious purposes, recruits Luke into her scheme. Unfortunately for Aphra, she’s up against a more ruthless foe in the harlequin-looking vampire-like Queen of the Screaming Citadel. Before long, the rest of the group has to show up to rescue them. It’s a gothic story, set in scary castle—not the usual Star Wars fare. There are some good points. Dr Aphra’s almost sociopathic outlook is always good for a few choice lines, the “murderous machines” Bee Tee and Triple Zero are on hand for their own gruesome commentary and some of the Queens hench-people, while not given much to do, are interestingly designed. But overall, the horror movies plotline didn’t seem much like Star Wars to me. Recommended for those who enjoy that type of story, or completists.
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Reviewed in the United States on February 27, 2018

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