FMF Factory 4.1 RCT Slip-On Muffler Yamaha WR / YZ 450 18-26

Features:

• The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally
• In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their 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 their exacting specifications and is manufactured 100% at their Southern California factory
• Massive Power gains throughout the RPM range.
• Huge weight savings
• RTS (Rapid Tuning System)

Fit the models: