FMF Factory 4.1 Slip-On Exhaust For Kawasaki | 042286 Alpinestars 2025 On the clutch side

On the clutch side

This optimizes rear wheel traction

2021 - 250 RR (RE)

The integrated band cutter allows trimming of the clamp in one action and the non-slip grip provides precise control for proper banding

simply remove your airfilter from the airbox and install the Airbox Cover with the provided mounting screw

FMF Factory 4.1 Slip-On Exhaust For Kawasaki | 042286 Alpinestars 2025 On the clutch sideThe Factory 4. 1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering moving the muffler closer to the motor to centralize mass. The Factory 4. 1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at