Uses the exclusive "Turbine Dampening System" Straight-through design of the spark arrestor canister and the Performance Flow stainless steel end cap ensure strength, durability and...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and...

Features a Hi-Flo stainless steel core and formed end caps Aircraft grade aluminum canister You will swear the motor has been bored and stroked with the first twist of the throttle Pounds lighter...

Replace muffler decals that are peeling off Made in the U.S.A.

Features a Hi-Flo stainless steel core and formed end cap Aircraft grade aluminum canister You will swear the motor has been bored and stroked with the first twist of the throttle Pounds lighter...

Replace muffler decals that are peeling off Made in the U.S.A.

The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and...

Built to provide excellent power for todays tracks geared toward 4-stroke machines Smooth power curve throughout the RPM range Large diameter canister for more tenability and longer lasting...

The lightest mufflers available Superior power and performance - horsepower improved throughout the rpm range Feature exclusive proprietary Chamber Core technology Factory Forward Engineering...

Built to provide excellent power for todays tracks geared toward 4-stroke machines Smooth power curve throughout the RPM range Large diameter canister for more tenability and longer lasting...