FMF Racing KTM 125 SX 2004-10/144 SX 2007-08/150 SX/XC 2009-10 Fatty PipeThe most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout. Increases throttle response and enhances over rev Tru Flo stamping process ensures perfect fit Includes O rings FMF Racing KTM 125 SX 2004 10 144 SX 2007 08 150 SX XC 2009 10 Fatty Pipe The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant