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.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2023 | Gas Gas | EX 450F | Base |
| 2021-2023 | Gas Gas | MC 450F | Base |
| 2022 | Gas Gas | MC 450F Troy Lee Designs | Base |
| 2019-2022 | Husqvarna | FC450 | Base |
| 2018-2020 | Husqvarna | FC450 Rockstar Edition | Base |
| 2019-2022 | Husqvarna | FX450 | Base |
| 2019-2022 | KTM | 450 EXC-F | Base |
| 2019-2022 | KTM | 450 EXC-F Six Days | Base |
| 2019-2022 | KTM | 450 SX-F | Base |
| 2018-2021 | KTM | 450 SX-F Factory Edition | Base |
| 2019-2022 | KTM | 450 XC-F | Base |
