FMF Racing KTM 85 SX 06-17/XC 08-09/KTM 105 SX/XC 07-12 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 85 SX 06 17 XC 08 09 KTM 105 SX XC 07 12 Fatty Pipe The most copied pipe in the world and #1 best seller for FMF, the Fatty broadens the powerband and provides significant increases