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:YearMakeModelSubmodel2021-2022Gas GasEC 250Base2021-2022Gas GasEC 300Base2021-2022Gas GasEX...

FMF Racing KTM 85SX 18-24/HQV TC85 18-24/Gas Gas MC85 21-24 Big Bore Factory Fatty PipeThis Part Fits:YearMakeModelSubmodel2021Gas GasMC 85Base

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:YearMakeModelSubmodel2017-2018KTM250 SXBase2017-2018KTM250 XCBase2017-2018KTM250...

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

FMF Racing KTM 250SX/XC/XCW/300XC/XCW 2011-16/HSBRG/HQV TC/TE250/300 2011-16 Gnarly PipeThis Part Fits:YearMakeModelSubmodel2011-2016KTM250 SXBase2011-2016KTM250 XCBase2011-2016KTM250 XC-WBase2011-2016KTM300 XCBase2011-2018KTM300 XC-WBase

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

Tractor-like bottom end pull, thicker midrange and rugged 18-gauge steel construction.This Part Fits:YearMakeModelSubmodel2006-2010KTM250 XCBase2006-2010KTM250 XC-WBase2006-2010KTM300 XCBase2006-2010KTM300 XC-WBase

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:YearMakeModelSubmodel2019-2021YamahaYZ85Base

Hand-pounded seams for superior flow, lighter gauge metal for the Factory sound.This Part Fits:YearMakeModelSubmodel1999-2021YamahaYZ250Base

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:YearMakeModelSubmodel1999-2021YamahaYZ250Base

Hand-pounded seams for superior flow, lighter gauge metal for the Factory sound.This Part Fits:YearMakeModelSubmodel2002-2021YamahaYZ125Base2020-2021YamahaYZ125XBase

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:YearMakeModelSubmodel2002-2021YamahaYZ125Base2020-2021YamahaYZ125XBase