FMF

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...

Uses the exclusive "Turbine Dampening System" Straight-through design of the spark arrestor canister and the Performance Flow stainless steel...

The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain When looking to add 4-stroke ...

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

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

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’ c...

Based on the successful exhaust pipe used by pro riders 19-gauge steel used on the header portion for optimum strength and durability; 20-gau...

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

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’ c...

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...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally Shorter overall length that is less susceptible t...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally Shorter overall length that is less susceptible t...

With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performance The Fatty broadens and sm...

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...

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

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’ c...

Pipe focuses its power delivery in the middle and upper RPM of the power band If you're running out of power up top, want more time between shifts...

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

Power gains are focused toward bottom and mid, with a goal of increased tractability An excellent off-road pipe, and a winner for tighter tra...

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’ c...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally Shorter overall length that is less susceptible t...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally Shorter overall length that is less susceptible ...

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output Internal ducts in th...

The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain When looking to add 4-st...

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...

The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain When looking to add 4-st...

The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain When looking to add 4-st...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally Shorter overall length that is less suscepti...

The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally Shorter overall length that is less susceptible t...

Superior power than stock systems Available with titanium and stainless steel headers FMF's Factory Forward Engineering centralizes mass and is le...

Superior power than stock systems Available with titanium and stainless steel headers FMF's Factory Forward Engineering centralizes mass and is le...

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output Internal ducts ...

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output Internal ducts in th...

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output Internal ducts in t...

RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output Internal ducts in th...

The Factory 4.1 RCT incorporates the FMF Resonance Chamber Technology both internally and externally In addition, we achieve a shorter overal...

The Factory 4.1 RCT incorporates the FMF Resonance Chamber Technology both internally and externally In addition, we achieve a shorter overall len...

Lighter 20 gauge steel used for the body of the pipe 19 Gauge steel used for the header portion Hand pounded seams for smooth flow transiti...

The FMF Rev pipe focuses its power delivery in the middle and upper rpms Dyno and track tested for every application O-rings included 2023-20...

More tractable power, improved throttle control Carbon steel with a nickel plated finish for maximum durability O-rings Included

Power gains are focused toward bottom and mid, with a goal of increased tractability Excellent off-road pipe and good for tighter tracks Built wit...

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

The Shorty Silencer is the most desirable silencer for supercross performance Overall length of canister and core is shorter to improve the h...

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

Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and comp...

The Mini Powercore 4 is the best bang for your buck performance bolt on for your mini Features a Hi-Flo stainless steel core and formed end caps, ...

Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and comp...