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.
-Available in Natural Aluminum with Carbon Fiber End Cap
-Massive Power gains throughout the RPM range.
-Huge weight savings
-New RTS (Rapid Tuning System)
-FMF uses the highest quality proprietary blend stainless steel made especially to our standards.
Make |
Model |
Year |
GAS GAS |
EX350F |
21-23 |
GAS GAS |
MC350F |
23 |
HUSQVARNA |
FC350 |
19-22 |
HUSQVARNA |
FX350 |
19-22 |
KTM |
350 SX-F |
19-22 |
KTM |
350 XC-F |
19-22 |
KTM |
350 XC-F KAILUB RUSSELL |
21 |