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...

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...

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction. O-rings included

The Turbinecore 2 is low maintenance, lightweight and retains power with the exclusive "Turbine Dampening System". This top-notch product features a straight through spark arrestor canister and...

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction. O-rings included

The most popular 2-Stroke silencer in the FMF arsenal. Balances power enhancements into a lightweight extruded aluminum oval canister design. Equipped with a "Performance Flow" end cap and...

The Turbinecore 2 is low maintenance, lightweight and retains power with the exclusive "Turbine Dampening System". This top-notch product features a straight through spark arrestor canister and...

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction. O-rings included

The Turbinecore 2 is low maintenance, lightweight and retains power with the exclusive "Turbine Dampening System". This top-notch product features a straight through spark arrestor canister and...

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction. O-rings included

Larger diameter canister for more tunability and increased packing life Race-tested, smooth power curve throughout RPM range Engineered to assault modern tracks and trails Delivers a crisp,...