The FMF Q4 Hex is engineered for the modern trail rider and enduro racer. It utilizes intricate internal chambers, baffles, and proprietary multistage packing material to significantly drop decibel levels while increasing power across the entire RPM range. Unlike "straight-through" motocross mufflers, the Q4 allows you to ride in noise-sensitive areas without sacrificing the throttle response your CRF450X deserves.
Quiet Power Technology: Engineered to meet USFS and AMA noise requirements (typically around 96dB), making it trail-legal for most state and federal lands.
Power Gains: Developed to increase torque and horsepower specifically in the low-to-mid range, which is critical for technical off-road riding and hill climbs.
Spark Arrestor Included: Features a removable USFS-approved screen-type spark arrestor, ensuring you are legal for all forestry trails.
Hexagonal Design: The "Hex" canister shape provides more internal volume for sound absorption material while offering better clearance for the rear brake caliper and swingarm.
Durability: Constructed from aircraft-grade aluminum and high-strength stainless steel for maximum weight savings and impact resistance.
Part Number: 045712
If you have any questions or need help finding what you need for your motorcycle or your next adventure please reach out:
EMAIL US AT tmbrmoto@tmbrmoto.com- OR CALL - 208-254-2044
