FMF Racing Dirt Bike Factory 4.1 RCT Exhaust Part Number:1011-5608 (MFG #: 044466) 2 Shell sizes

2 Shell sizes

Built-in shutoff valve

featuring lightweight polyester/spandex mesh and high-performance polyester knit

5" diameter base

Button type tool-free adjust

FMF Racing Dirt Bike Factory 4.1 RCT Exhaust Part Number:1011-5608 (MFG #: 044466) 2 Shell sizesFEATURES The Factory 4. 1 RCT incorporates FMF's Resonance Chamber Technology both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering moving the muffler closer to the motor to centralize mass Constructed from only aerospace grade materials that meet their exacting specifications and is manufactured 100% at their Southern California