Factory 4.1 RCT Slip-On Muffler - Titanium/Anodized - Carbon End Cap - YZ450F/X
The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally, Achieves a shorter overall length that is less susceptible to crash damage and complementary to 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 exacting specifications and is manufactured 100% at the Southern California factory