FMF Racing Yamaha YZ450F 14-17/ YZ450FX / WR450F 16-18 Anod TI F 4.1 RCT SO Muffler w/R.Carbon Cap - 044409

The 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 our Southern California factory.