Description
FMF Factory 4.1 RCT Exhaust System Honda CRF450R / CRF450RX / CRF450RWE / CRF450R-S
The FMF Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, FMF has achieved a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering which moves the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from aerospace grade materials that meet FMF’s exacting specifications and is manufactured 100% in their Southern California factory.
Features:
- Massive power gains throughout the RPM range
- Huge weight savings over stock exhaust
- RTS (Rapid Tuning System) for quick and easy track-side tuning
- Removable spark arrestor included
- Quiet insert included (94db)
- Meets AMA and FIM sound requirements
- Dual Muffler systems include MegaBomb header
- Single Muffler system includes PowerBomb header
- 100% made in the USA









