fmf

Overall increase in power and torqueDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInter...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externallyIn addition, FMF achieves a shorter overall leng...

Hi-Flo end cap boosts all-around performanceComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a hi...

The Q4 employs intricate chambers, baffles and proprietary multistage packing materialWith the Q4 you don’t need to hear the power, just feel the p...

The ultimate power booster featuring exclusive Ti-Metal constructionImproved bottom to mid-range powerProduce the low end of a longer header and th...

Overall increase in power and torqueDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInter...

The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ cr...

Computer designed and dyno tested to make power gains where each machine needs them the mostTru-Flo stamping process ensures a perfect fit and opti...

With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performanceThe Fatty broadens and smooths o...

The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ cr...

Straight-through design of the spark arrestor canister and the Performance Flow stainless steel end cap ensure strength, durability and unrestricte...

The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externallyIn addition, FMF achieves a shorter overall leng...

Overall increase in power and torqueDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInter...

Utilize FMF's patented module precisely located at the initial stage of the header for specific applicationsPosition "Bomb" increases performanceHo...

Computer designed and dyno tested to make power gains where each machine needs them the mostTru-Flo stamping process ensures a perfect fit and opti...

The most popular 2-stroke silencers in FMF's arsenalThe elliptically shaped bodies with perforated core perform well in any conditionEquipped with ...

The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ cr...

Built with tough 18-gauge steelO-rings IncludedPower gains are focused toward bottom and mid, with a goal of increased tractabilityExcellent off-ro...

Lightweight extruded aluminum oval canister mated to a perforated coreThe Powercore 2 silencer provides a strong performance edge for any 2-stroke ...

Race-tested, smooth power curve throughout the RPM rangeLarger diameter canister for more tunability and longer lasting packing lifeLighter than st...

The straight through design of the Turbine Dampening System spark arrestor canister and the performance flow stainless steel end cap ensures streng...

Race-tested, smooth power curve throughout the RPM rangeEngineered to assault today's tracks and trailsLarger diameter titanium canister for more t...

The ultimate power booster featuring exclusive Ti-Metal constructionImproved bottom to mid-range powerProduce the low end of a longer header and th...

The ultimate power boosterImproved bottom to mid-range powerProduce the low end of a longer header and the top end of a short headerLess susceptibl...