Description
Features
- The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology both internally and externally
- In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their 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 their exacting specifications and is manufactured 100% at their Southern California factory
- Massive Power gains throughout the RPM range.
- Huge weight savings
- RTS (Rapid Tuning System)
| Position | Notes | |||
|---|---|---|---|---|
| 2007-2015 | KTM | 250 SX-F | - | - |
| 2007-2015 | KTM | 450 XC-F | - | - |
| 2007-2015 | KTM | 250 XC-F | - | - |
| 2004-2014 | KTM | 250 XCF-W 4-Stroke | - | - |
| 2007-2015 | KTM | 350 SX-F | - | - |
| 2007-2015 | KTM | 350 XC-F | - | - |
| 2008-2014 | KTM | 450 XCF-W | - | - |
| 2007-2015 | KTM | 450 SX-F | - | - |
| 2007-2010 | KTM | 450 SMR | - | - |
| 2014-2015 | Husqvarna | FE350 | - | - |
| 2014-2015 | Husqvarna | FE250 | - | - |
