Select the year of your Audi A4:
ARMYTRIX Valvetronic Exhaust System for Audi B9 A4
Upgrade your Audi B9 A4 with the ARMYTRIX Valvetronic Stainless Steel Exhaust System. This precision-engineered system not only boosts power and reduces weight but also transforms your driving experience with a deep, resonant sporty sound while minimizing unwanted frequencies in critical RPM ranges.
Key Features:
- Main pipe diameter: 3 inches
- Quad exhaust tips: 3.5 inches available in polished chrome and carbon finishes
- Innovative Throttle Pedal Sensor and Engine RPM Signal Auto Functions for optimal performance
- Direct bolt-on installation for hassle-free setup
- Plug-n-Play module reduces installation time by 30%
- App-controlled valve system via OBDII port for seamless operation
Performance Benefits:
The ARMYTRIX system is designed to enhance your driving dynamics. With the valves closed during low RPMs, you maintain backpressure for better torque. Open the valves at higher speeds for increased airflow, resulting in noticeable gains in horsepower and torque. When you switch to race mode, the exhaust opens fully, delivering an exhilarating sound and performance boost that’s sure to turn heads.
Included Components:
- Front Pipe (AU942-BF)
- Mid Pipe (AU942-M1)
- Y-Pipe (AU942-M2)
- Valvetronic Mufflers (AU942-VML + AU942-VMR)
- Wireless Remote Control Kit (OWRC)
- Quad Carbon Tips (4xC11)
Installation Notes:
- Compatible with S4 Style Quad diffuser on non-S-line rear bumpers or S4 rear diffuser on S-line bumpers.
- Check your VIN for fitment verification.
- Fits both Left-Hand Drive and Right-Hand Drive models.
- ARMYTRIX OBDII Control Module required for full functionality.
Customer Feedback:
Many Audi B9 A4 owners have praised the ARMYTRIX system for its impressive sound and performance enhancements. Users have noted how the Valvetronic feature allows them to enjoy a quieter ride during daily commutes while unleashing a thrilling roar on the open road. The installation process is straightforward, and the app control adds a modern touch to the driving experience.
Valvetronic Technology Explained:
The Valvetronic system is a game-changer, allowing you to control the exhaust sound with just the push of a button. Whether you need a subtle sound for early morning drives or a full-throttle roar on the highway, the choice is yours. The system connects to your engine's vacuum source, enabling dynamic control of the exhaust valves based on RPM or throttle position, ensuring you get the performance you desire.
Visuals:




This product ships direct from the manufacture in Taiwan. Customer is responsible for any additional customs and duties charged by the carrier.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Make Vehicle | Model | Year |
---|---|---|
2021-2024 Audi A4 |
A4 | 2021-2024 |
When it comes to enhancing your vehicle's performance, Armytrix stands out as a brand synonymous with quality, innovation, and a passion for automotive excellence. Founded with the vision to revolutionize the aftermarket exhaust industry, Armytrix has carved a niche for itself by blending cutting-edge technology with a deep understanding of automotive enthusiasts' needs.
The Legacy of Armytrix: A Brand Built for EnthusiastsArmytrix was born from a desire to create high-performance exhaust systems that not only improve the sound and efficiency of vehicles but also enhance the overall driving experience. With years of expertise in engineering and design, Armytrix has developed a reputation for crafting exhaust systems that deliver unrivaled performance and a distinct auditory experience. Their commitment to quality is evident in every product, making them a favorite among car enthusiasts around the globe.
Why Choose Armytrix?Armytrix specializes in a variety of performance parts, with a primary focus on exhaust systems. Their product lineup includes:
- Valvetronic Exhaust Systems
- Cat-Back Exhausts
- Downpipes
- Mid-Pipes
- Exhaust Tips
What sets Armytrix apart from the competition? It's their dedication to innovation and performance. The Valvetronic technology allows drivers to control the sound of their exhaust with the push of a button, providing a customizable experience that can switch from a refined purr to a roaring growl. This level of versatility is what every car enthusiast dreams of, giving you the power to adapt your vehicle's sound to match your mood or driving conditions.
Unmatched Quality and PerformanceArmytrix exhaust systems are crafted from high-grade materials, ensuring durability and longevity. The use of T304 stainless steel not only enhances the visual appeal of the exhaust but also resists corrosion, making it perfect for any environment. Each exhaust system undergoes rigorous testing to ensure it meets the highest standards of performance and sound quality, which is why Armytrix has earned the trust of countless automotive enthusiasts.
Join the Armytrix FamilyChoosing Armytrix means joining a community of like-minded individuals who share a passion for performance and style. The brand has established a strong presence in the automotive world, with a devoted following that appreciates the craftsmanship and engineering behind each product. Whether you're a weekend warrior or a daily driver, Armytrix has something to offer for every type of car enthusiast.
In conclusion, if you're looking to elevate your vehicle's performance and sound, look no further than Armytrix. With a legacy built on quality, innovation, and a deep understanding of your needs as a car lover, Armytrix is the go-to brand for high-performance exhaust systems. Experience the difference today and take your driving experience to the next level with Armytrix!
Upon receiving the product(s), it is the buyer's personal responsibility to examine the conditions of the part(s) prior to installation. If any part(s) proving defective in material and/or workmanship, the buyer must document the defect(s), contact ARMYTRIX immediately and return the product(s) within 30 days. We will replace all defective items free of charge, but the transportation cost incurred will be at buyer's own expense.
Warranty shall be considered void if damages to the product(s) were due to improper installation and/or improper use, including, but not limited to: off-roading, racing, unauthorized alterations to the product(s), lack of care, impact damage and any other damages caused by using the product(s) other than intended by the manufacturer.
To protect the integrity and functionality of the exhaust system, in OFF Mode when 4500 RPM is reached or when turbo pressure reaches 0.8 bar, the valves will automatically open as a safety precaution. A friendly reminder, by de-catting the exhaust system the chances of triggering the 'Check Engine' signal are increased and our warranty does not cover this or other software incompatibilities. We recommend remapping the vehicle's ECU to prevent potential conflicts.
ARMYTRIX exhaust system(s) must be installed by certified technician(s) to maintain its warranty status. We reserve the right to withhold issuance of credit until defective part(s) has been returned and examined to determine reason of failure.
ARMYTRIX will not be responsible for any everyday wear-and-tear damages that occur in normal driving conditions; including, not limited to: man-made or natural damages to external surface, internal deterioration, discoloration, rust and corrosion. Wear-and-tears are unavoidable; we recommend regular check-ups and care to extend the product(s) lifespan and maintain its performance.
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