FMF Racing KTM 250SX 2003/250-300 ALL 2004-10 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 250SX 2003 250 300 ALL 2004 10 Fatty Pipe The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases throughout.