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 Blue Anodized Titanium Muffler with Carbon End Cap
-Massive Power gains throughout the RPM range.
-Huge weight savings
-New RTS (Rapid Tuning System)
-FMF uses the highest quality proprietary blend of alloy grade titanium made specifically to our standards.
Make |
Model |
Year |
HUSQVARNA |
FC250 |
16-18 |
HUSQVARNA |
FC350 |
16-18 |
HUSQVARNA |
FC450 |
16-18 |
HUSQVARNA |
FE250 |
17-19 |
HUSQVARNA |
FE350 |
17-19 |
HUSQVARNA |
FE450 |
17-19 |
HUSQVARNA |
FE501 |
17-19 |
HUSQVARNA |
FX350 |
17-18 |
HUSQVARNA |
FX450 |
17-18 |
KTM |
250 EXC-F |
17-19 |
KTM |
250 SX-F |
16-18 |
KTM |
250 SX-F FACTORY EDITION |
15-17 |
KTM |
250 XC-F |
16-18 |
KTM |
350 EXC-F |
17-19 |
KTM |
350 SX-F |
16-18 |
KTM |
350 XC-F |
16-18 |
KTM |
450 EXC-F |
18-19 |
KTM |
450 EXC-F SIX DAYS |
17-19 |
KTM |
450 SX-F |
16-18 |
KTM |
450 SX-F FACTORY EDITION |
15-17 |
KTM |
450 XC-F |
16-18 |
KTM |
500 EXC-F |
17-19 |