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.

• Manufactured from a special high-grade titanium, with blue anodized outer sleeve
• Carbon Fiber End Cap
• Power gains throughout the RPM range
• Substantial saving in weight
• Can also be fitted in combination with original manifold
• We recommend use in conjunction with an FMF Megabomb header for further increase in rideability and power output

Fitment:
KTM 350/450 SX-F/XC-F 19-22

Husqvarna 350/450 FC 19-22

GasGas 350F/450F MC/EX 21-23