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...

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...

Longer oval canister, the trademarked Q uses internal technology that retains optimum flow characteristics while enhancing sound absorption qualities Meets the mandated 96dB sound level set by the...

Utilize FMF's patented module precisely located at the initial stage of the header Key point positioning of the "Bomb" increases performance Horsepower is increased as much as 10% Act...

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...

Overall increase in power and torque. Durable stainless steel and aluminum construction. Space Age internal packing material for maximum longevity. Internal shape of core uses Hi-Flo technology...

Our Fatty Gold Series pipe broadens the powerband and provides a healthy power increase everywhere. Improved throttle response, a linear powerband and enhanced over-rev all add up to a pipe that...

The most popular 2-stroke silencers in FMF's arsenal The elliptically shaped bodies with perforated core perform well in any condition Equipped with a Performance Flow end cap and nickel-plated...

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...