FMF Factory 4.1 RCT Muffler - 045633 For Gas Gas 250F 2021-2023 | KTM SX-F 250 / XC-F 250 2019-2022 | Husqvarna FC 250 2019-2022 Accessories Wiseco ring types are not

Wiseco ring types are not interchangeable (i

Extruded from true 7000 series aluminum

Clutch springs are shot-peened for maximum life

maintain proper and critical oil flow to top end with metered oiling

Must remove OEM bumper

FMF Factory 4.1 RCT Muffler - 045633 For Gas Gas 250F 2021-2023 | KTM SX-F 250 / XC-F 250 2019-2022 | Husqvarna FC 250 2019-2022 Accessories Wiseco ring types are notFeatures The 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