FMF Racing

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power outputInternal ducts in the chambers of the RCT system increase internal volume...

Runs well with sound-restricting mufflers; effectively reduce sound output by as much as 1.5 dBProduces the low end of a longer header and the top end of a short headerLess susceptible to damage than...

Hi-Flo end cap boosts all-around performanceComputer-designed and dyno-tested for ever 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...

The Q4 employs intricate chambers, baffles and proprietary multistage packing materialWith the Q4 you don’t need to hear the power, just feel the power!Less sound equals more groundPower gains...

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power outputInternal ducts in the chambers of the RCT system increase internal volume...

The Q4 employs intricate chambers, baffles and proprietary multistage packing materialWith the Q4 you don’t need to hear the power, just feel the power!Less sound equals more groundPower gains...

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power outputInternal ducts in the chambers of the RCT system increase internal volume...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology™ both internally and externallyShorter overall length that is less susceptible to crash damage and complementary to FMF's Factory...

Runs well with sound-restricting mufflers; effectively reduce sound output by as much as 1.5 dBProduces the low end of a longer header and the top end of a short headerLess susceptible to damage than...

The Q4 employs intricate chambers, baffles and proprietary multistage packing materialWith the Q4 you don’t need to hear the power, just feel the power!Less sound equals more groundPower gains...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology™ both internally and externallyShorter overall length that is less susceptible to crash damage and complementary to FMF's Factory...

Complete systems and slip-on mufflersSystems feature titanium PowerBomb header and midpipe, except where notedSlip-on mufflers available in natural titanium or stainless steelTitanium slip-on...