Exhaust

Built to provide excellent power for todayÆs tracks geared toward 4-stroke machines Smooth power curve throughout the RPM range Large diameter canister for more tenability and longer lasting packing life Delivers a crisp, notable sound Optimally designed...

Built to provide excellent power for todayÆs tracks geared toward 4-stroke machines Smooth power curve throughout the RPM range Large diameter canister for more tenability and longer lasting packing life Delivers a crisp, notable sound Optimally designed...

Built to provide excellent power for todayÆs tracks geared toward 4-stroke machines Smooth power curve throughout the RPM range Large diameter canister for more tenability and longer lasting packing life Delivers a crisp, notable sound Optimally designed...

The Q4 employs intricate chambers, baffles and proprietary multistage packing material With the Q4 you donÆt need to hear the power, just feel the power! Less sound equals more ground Power gains throughout the entire rpm range Spark arrestor included...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound Less mass to enhance power-to-weight ratio Quiet power with minimal sacrifice for performance Developed over years of championship off-road racing...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound Less mass to enhance power-to-weight ratio Quiet power with minimal sacrifice for performance Developed over years of championship off-road racing...

Closed course use only.. HEADER S/S MGMBM YZ450F

Used for a single sided exhaust system. HEADER S/S MGBMB W/MID

The ultimate power booster featuring exclusive Ti-Metal construction Improved bottom to mid-range power Produce the low end of a longer header and the top end of a short header Less susceptible to damage than a long header Runs well with...

Superior power than stock systems Available with titanium and stainless steel headers FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage Innovative rear end cap features simple installation of tuning tip inserts or spark...

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 Enhanced sonic evacuation provides for higher flow and...

FMF developed the PowerCore 4 to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding Aluminum construction and stainless steel Hi-Flo endcaps...