FMF SUZ RMZ450'18-23 TI FACT 4.1 RCT S-ON ANOD CARB END CAP 43365FMF SUZ RMZ450'18 23 TI FACT 4. 1 RCT S ON ANOD CARB END CAP 43365 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