STAINLESS STEEL ALUM. FACT-4.1 RCT W/R.CARBON CAP FULL SYSTEM 042372 YAMAHA-WR250F-2025 you can choose between a

you can choose between a moto or supercross version

The supercross version is designed for more low to mid-range power where the moto version is focused in the mid to upper RPM range

cool and ramp back up at a higher velocity

FMF is the leader in high performance quiet technology and our Q4 is the next evolution in off road exhaust

STAINLESS STEEL ALUM. FACT-4.1 RCT W/R.CARBON CAP FULL SYSTEM 042372 YAMAHA-WR250F-2025 you can choose between aThe 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