FMF Factory 4.1 Mini Slip-On SS w/ Aluminum Muffler - All KLX140 axle Chrome molybdenum steel

Chrome molybdenum steel

Why use a forging

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

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

- High compression piston with rings

FMF Factory 4.1 Mini Slip-On SS w/ Aluminum Muffler - All KLX140 axle Chrome molybdenum steelThe 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