FMF Factory 4.1 RCT Slip-On Exhaust Yamaha WR250F '20-21 | 044474 2023 The “wrap-around” ankle pivot system

The “wrap-around” ankle pivot system provides strong lateral support without compromising flexibility

All these components are impregnated with zero chain drag lube and UV protection

UV impregnated to keep the color from fading and material form cracking

Gold series pipes focus power where you need it most

FMF Factory 4.1 RCT Slip-On Exhaust Yamaha WR250F '20-21 | 044474 2023 The “wrap-around” ankle pivot systemThe 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