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.
- All new incorporating the latest in Resonance Chamber Technology
- Patented core shape lowers sound level while maintaining maximum power output
- Patented canister shape increases internal volume for more sound absorbing material
- Patented chamber design to enhance and refine exhaust pressure
- Factory Forward Engineering centralizes mass and is less prone to crash damage
- Tuned exhaust with optimized core specifications for each application
- Innovative rear endcap for simple installation of tuning tip inserts or spark arrestor
- Titanium Megabomb included to optimize each machines power output
Make |
Model |
Year |
GAS GAS |
EX250F |
21-22 |
GAS GAS |
MC250F |
21-23 |
HUSQVARNA |
FC250 |
19-22 |
KTM |
250 SX-F |
19-22 |
KTM |
250 XC-F |
19-22 |