The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout.

The FMF Rev Pipe focuses on power delivery in the middle and upper RPMs of the powerband. If you're short on power up top, want more time between shifts and spend your time in deep berms or sand, the Rev is the pipe for you.

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction.

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction.

The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout.This Part Fits:YearMakeModelSubmodel2021-2023Gas GasMC 125Base2019-2021KTM125 SXBase2021-2022KTM125...

FMF Racing KTM 250SX/250-300XC 17-18/Husqvarna TC250/TX250-300 17-18 Factory PipeThis Part Fits:YearMakeModelSubmodel2017-2018KTM250 SXBase2011-2018KTM250 XCBase2017-2018KTM250 XC-WBase2018-2019KTM250 XC-W TPIBase2017-2018KTM300 XCBase2017-2018KTM300...

FMF Racing KTM 250SX/XC/300XC 17-18 250/300EXC/ 17-19/HSQ TC250/TX250/300 17-18/TE250/300i GnarlyThis Part Fits:YearMakeModelSubmodel2017-2018KTM250 SXBase2017-2018KTM250 XCBase2017-2018KTM250 XC-WBase2019KTM250 XC-W TPIBase2017-2018KTM300...

FMF Racing KTM 65SX 2016-23/HQV TC65 2017-23/Gas Gas MC65 2021-23 Factory Fatty PipeThis Part Fits:YearMakeModelSubmodel2021-2023Gas GasMC 65Base2016-2023KTM65 SXBase

The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout.This Part Fits:YearMakeModelSubmodel2021-2023Gas GasMC 65Base2016-2023KTM65 SXBase

The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout.This Part Fits:YearMakeModelSubmodel2021-2023Gas GasMC 50Base2009-2023KTM50 SXBase

The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout.This Part Fits:YearMakeModelSubmodel2022YamahaYZ125Base2022YamahaYZ125XBase

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction.