FMF Factory 4.1 Mini Slip-On SS w/ Aluminum Muffler - All KLX140 axle - High compression piston with

- High compression piston with rings

Chrome molybdenum steel

TRX90 All Models

Most importantly this will prevent catastrophic damage to the engine cases if you lay the bike over

The addition of roller rocker arms and a new camshaft are the biggest changes

FMF Factory 4.1 Mini Slip-On SS w/ Aluminum Muffler - All KLX140 axle - High compression piston withThe 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