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.
Fitment:
2021 Honda CRF450R Base
2021 Honda CRF450RX Base
2021 Kawasaki KX250F Base
2022 Honda CRF450R Base
2022 Honda CRF450RX Base
2023 Honda CRF450R Base
2023 Honda CRF450RX Base
- air_freight_prohibited:
- false
- not_carb_approved:
- false
- ltl_freight_required:
- false
- prop_65:
- Unknown
- part_type:
- powersports
- epa:
- Compliant
- carb_acknowledgement_required:
- false
- regular_stock:
- false
