FMF Racing

The PowerCore 4 was developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding...

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash...

Race-inspired, price-point muffler made for maximum power output. Aircraft-quality extruded aluminum canister with stainless steel components.

The ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid-range powerband. Patented FMF technology combines the benefits of a longer header, with top end peformance...

FMF Racing 4-STROKE 70MM Stainless Steel Swivel Spring Kit P/N 011396

Comprised of fine, blended interwoven fiberglass fibers made to FMF's specifications for high-heat resistance, great sound attenuation and optimum performance and longevity.

Comprised of fine, blended interwoven fiberglass fibers made to FMF's specifications for high-heat resistance, great sound attenuation and optimum performance and longevity.

Comprised of fine, blended interwoven fiberglass fibers made to FMF's specifications for high-heat resistance, great sound attenuation and optimum performance and longevity.

FMF Racing 4-Stroke Wash Plug P.O.P. Display (Includes 20 Plugs)

Wash plugh designed to prevent water and other debris from entering exhaust system during washing.

FMF Racing 4.1 Colorways 2020 Logo Kit - Orange

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash...