FMF Racing

FMF Racing Yamaha YZ450F 03-05/WR450F 03-06 Q4 S/A Muffler - 044199

A 4-Stroke header system that incorporates FMF's patented Power Bomb module at a precise location in the initial stage of the header system; by positioning the "Bomb" at this key point, the expansion...

FMF Racing Yamaha YZ450F 07-09/WR450F 07-15 SS Powerbomb Header - 044225

The redesigned PowerBomb is a 4-stroke header that incoporates FMF's patented PowerBomb module at a precise location in the initial stage of the header, resulting in performance gains and improved...

FMF Racing Yamaha YZ450F 10-13 Powercore 4 Hex Muffler - 044396

The PowerCore 4 was developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding...

FMF Racing Yamaha YZ450F 14-17/ WR/YZ450FX 16-18 Anod TI Factory 4.1 RCT SO Muffler w/R. Carbon Cap - 044429

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 crash...

FMF Racing Yamaha YZ450F 14-17/YZ450FX 16-18/WR450F 16-18 Powercore 4 Hex Muffler - 044404

The PowerCore 4 was developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding...

FMF Racing Yamaha YZ450F 18-19/WR450F 19-20/YZ450FX 19 SS Megabomb Header w/Mid Pipe - 044439

The ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid-range powerband. Patented FMF technology combines the benefits of a longer header, with top end peformance...

FMF Racing Yamaha YZ450F 18-25/WR450F (2019)/ YZ450FX 19-24 Hex Q4 S/A Muffler - 044442

A 4-Stroke header system that incorporates FMF's patented Power Bomb module at a precise location in the initial stage of the header system; by positioning the "Bomb" at this key point, the expansion...

FMF Racing Yamaha YZ450F 18-25/WR450F (2019)/ YZ450FX 19-24 Powercore 4 Hex Muffler - 044441

The PowerCore 4 was developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding...

FMF Racing Yamaha YZ450F 20-22/YZ450FX 19-23 SS Megabomb Header w/Mid Pipe - 044458

The ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid-range powerband. Patented FMF technology combines the benefits of a longer header, with top end peformance...

FMF Racing Yamaha YZ450F 20-22/YZ450FX 19-23 Titanium Megabomb Header w/Mid Pipe - 044459

The ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid-range powerband. Patented FMF technology combines the benefits of a longer header, with top end peformance...

FMF Racing Yamaha YZ450F 23-25 SS Megabomb Header w/Mid Pipe - 044475

The ultimate power boost, the MegaBomb Headers improve performance along the bottom and mid-range powerband. Patented FMF technology combines the benefits of a longer header, with top end peformance...

FMF Racing Yamaha YZ450F 24-25 AL Factory 4.1 RCT w/ R. Carbon Cap Comp Sys w/SS MB Header/ Mid Pipe - 044477

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 crash...