4 Stroke

FMF Racing KTM 450/500EXC-F 17-19/HQV FE450/501 17-19 SS Megabomb Header/Mid Pipe - 045659

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 of a shorter header.

FMF Racing Sherco 250-500 FSE 18-23 Anod TI Factory 4.1 RCT SO Muffler w/R. Carbon Cap - 045658

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 damage and complementary to our Factory Forward...

FMF Racing HQV FE450 20-23/KTM 450XCF 23 Anod TI Factory 4.1 RCT Sys w/SS MB Header/Mid - 045654

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 damage and complementary to our Factory Forward...

FMF Racing KTM 350XCF-W 20-22/HQV FE350 20-22/GG EC350F 21 Anod TI F4.1 RCT Sys w/SS MB Header/Mid - 045653

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 damage and complementary to our Factory Forward...

FMF Racing HQV FE450 20-23/KTM 450XCF-W 23 SS Megabomb Header/Mid Pipe - 045644

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 of a shorter header.

FMF Racing HQV FE250 20-21/ GG EC250F 21 SS Megabomb Header/Mid Pipe - 045642

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 of a shorter header.

FMF Racing Beta 350/390/400/430/450/480/498/500/520 10-18 Hex Q4 S/A Muffler - 045522

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 and contraction of exhaust sonics through the system...

FMF Racing Beta 350-390 10-18 SS Powerbomb Header - 045520

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 flow.

FMF Racing 26+ Yamaha YZ450F SS Megabomb 2-Piece Header - 044481

FMF Racing 26+ Yamaha YZ450F SS Megabomb 2-Piece Header

FMF Racing Yamaha YZ450F 24-25 Anod Fact 4.1 RCT w/ R. Carbon Cap Comp Sys w/TI MB Header/ Mid Pipe - 044478

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 damage and complementary to our Factory Forward...

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 damage and complementary to our Factory Forward...

FMF Racing 23-25 Yamaha YZ450F Titanium Megabomb Header w/Mid Pipe - 044476

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 of a shorter header.