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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.
-See Features Tab -> Fitment for header compatibility
| Make | Model | Year | 
|---|---|---|
| GAS GAS | EC 250F | 21 | 
| GAS GAS | EC350F | 21 | 
| HUSQVARNA | FE 250 | 20-21 | 
| HUSQVARNA | FE 350 | 20-23 | 
| HUSQVARNA | FE 350 ROCKSTAR EDITION | 21 | 
| HUSQVARNA | FE 450 | 20-21,23 | 
| HUSQVARNA | FE501 | 20-23 | 
| KTM | 350 XCF-W | 20-22 | 
| KTM | 450 XCF-W | 20-21,23 | 
| KTM | 500 XCF-W | 20-23 | 
 
         
       
                 
                 
                 
                 
                