Description
Features
- The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology both internally and externally
- Shorter overall length that is less susceptible to crash damage and complementary to FMF's 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 FMF's exacting specifications and is manufactured 100% at their Southern California factory
- Massive Power gains throughout the RPM range.
- Huge weight savings
- New RTS (Rapid Tuning System)
| Position | Notes | |||
|---|---|---|---|---|
| 2023 | KTM | 450 XCF-W | - | - |
| 2020, 2021, 2023 | Husqvarna | FE450 | - | - |
| 2022 | Husqvarna | FE 450 | - | - |
