Select the year of your BMW X3:

Upgrade your BMW X3 M or X4 M with the BMF98E-QC38 ARMYTRIX Stainless Steel Exhaust System, designed to boost performance and enhance your driving experience. This high-quality exhaust system not only reduces weight but also significantly improves sound quality, delivering a rich, sporty tone while eliminating unwanted frequencies at critical RPMs.
The ARMYTRIX system stands out with its innovative Throttle Pedal Sensor and Engine RPM Signal Auto Functions. This technology allows for improved launch starts without compromising backpressure, as the valves automatically close at low RPMs. When you hit higher speeds, the valves open up, maximizing airflow for improved horsepower and torque. You can customize when the valves open and close based on your engine RPM or throttle position, putting you in control of your driving experience.
When you activate race mode, the gas flows through straight pipes, unleashing an exhilarating sound and performance boost. Expect a powerful roar that will turn heads and elevate your driving adventures!
Key Features:
- Integrates seamlessly with OE Valvetronic Control
- Includes Front Pipe (BMF98-F)
- Mid Pipes (BMF98-ML + BMF98-MR)
- Muffler (BMF98-VM)
- Valvetronic Muffler Adapters (BMF98-EVTL + BMF98-EVTR)
- Available with stunning Quad Carbon Tips (4xC38)
Fitment:
- BMW X3 M Non-OPF F9X 2019+
- BMW X4 M Non-OPF F9X 2019+

How the ARMYTRIX Valvetronic System Works:
The Valvetronic feature allows you to control the sound level of your exhaust with ease. Whether you need a quieter ride for early mornings or want to unleash the full power of your engine on open roads, this system has you covered. You can manage the exhaust sound through a remote or a smartphone app, adjusting the valves based on your preferences.
By tapping into the engine's vacuum, the Valvetronic system communicates with the OBDII module via Bluetooth, allowing you to open or close the exhaust valves effortlessly. You can also set it to automatic mode, enabling the system to adjust based on your driving style.
Experience the thrill of a powerful sound while potentially increasing horsepower, especially if your vehicle is turbocharged. The BMF98E-QC38 is more than just an exhaust system; it’s a complete driving enhancement that transforms your BMW into a performance machine.




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 |
---|---|---|
2019-2024 BMW X3 |
X3 | 2019-2024 |
2019-2024 BMW X4 |
X4 | 2019-2024 |
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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