FMF Factory 4.1 RCT Stainless System

Fits The Following Bikes:

GAS GASEX250F2021-2022
GAS GASMC250F2021-2022

HUSQVARNA FC250 2019-2022

KTM 250 SX-F 2019-2022
KTM 250 XC-F I 2019-2022



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 Natural Aluminum with Carbon Fiber End Cap

-Massive Power gains throughout the RPM range.

-Huge weight savings

-New RTS (Rapid Tuning System)

-FMF uses the highest quality proprietary blend stainless steel made especially to our standards.