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:
| Year |
Make |
Model |
Submodel |
| 2017-2019 |
KTM |
250 EXC-F |
Base |
| 2016-2018 |
KTM |
250 SX-F |
Base |
| 2015-2016 |
KTM |
250 SX-F Factory Edition |
Base |
| 2016-2018 |
KTM |
250 XC-F |
Base |
| 2017-2019 |
KTM |
350 EXC-F |
Base |
| 2016-2018 |
KTM |
350 SX-F |
Base |
| 2016-2018 |
KTM |
350 XC-F |
Base |
| 2018-2019 |
KTM |
450 EXC-F |
Base |
| 2016-2018 |
KTM |
450 SX-F |
Base |
| 2015-2017 |
KTM |
450 SX-F Factory Edition |
Base |
| 2016-2018 |
KTM |
450 XC-F |
Base |
| 2017-2019 |
KTM |
500 EXC-F |
Base |
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