Description & Size Guide
Factory 4.1 RCT Slip-On MufflerThe Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their 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 their exacting specifications and is manufactured 100% at their Southern California factory Massive Power gains throughout the RPM range. Huge weight savings RTS (Rapid Tuning System) Gas Gas EC 250 F 2021 Gas Gas EC 350 F 2021 Husqvarna FE 250 2020-2021 Husqvarna FE 350 2020-2022 Husqvarna FE 450 2020-2023 Husqvarna FE 501 2020-2022 KTM XCF-W 350 2020-2022 KTM XCF-W 450 2023 KTM XCF-W 500 2020-2022
This part fits the below bikes:
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