FMF Racing - Hex Q4 S/A Muffler

The FMF Racing Q4 HEX Exhaust represents the next evolution in off-road exhaust technology. As the leader in high-performance quiet systems, FMF has engineered the Q4 to deliver impressive power gains while meeting the strictest noise regulations. With intricate chambers, baffles, and proprietary multi-stage packing, the Q4 HEX is the best performing quiet muffler available—because you don’t need to hear the power, just feel it.

Key Features:

• Quiet Power: FMF's innovative design reduces noise without sacrificing performance, so you can enjoy more power with less sound. Less sound equals more ground – ride harder and longer.
• Meets Sound Regulations: Complies with USFS and FIM World Enduro sound regulations, making it ideal for competitive and off-road riders.
• Power Gains Across RPM Range: Significant improvements in power and throttle response throughout the entire RPM range, providing consistent performance.
• Spark Arrestor Included: Designed with safety in mind, the Q4 comes with a spark arrestor, ensuring compliance with trail and forest riding regulations.
• Lighter Than Stock: Enjoy a pound lighter than stock exhausts, improving your bike's agility and handling without compromising strength or durability.
• Rugged Off-Road Design: Built for endurance, the Q4 HEX is tough enough to handle the harshest off-road conditions while maintaining peak performance.
• Made in the USA: Proudly crafted in the USA, FMF offers dedicated quiet exhaust systems to ensure you get the best in both performance and reliability.

Why Choose the FMF Q4 HEX Exhaust?

• Best of Both Worlds: Gain more power while maintaining low noise levels for a more enjoyable and responsible ride.
• Endurance-Ready: Designed for off-road conditions, this rugged, lightweight system withstands long rides and rough terrain.
• FMF’s Quiet Technology: FMF is the only US manufacturer offering dedicated quiet exhaust systems, setting a standard for riders who demand both performance and noise control.