

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 FMF's Southern California factory.
Also Fits:
KTM
SXF/XCF (19-22) 250
SXF/XCF (19-22) 350/450
GasGas
MC 250F (21-23)
MCF/EXF 350/450 (21-23)
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