FMF Factory 4.1 Exhaust System | 044447 tire Yamaha YZ250FX (2019-2022)

Yamaha YZ250FX (2019-2022)

baffles and proprietary multistage packing material making it the best performing quiet muffler available

Clavicle shell relief zone creates a soft zone filled with EPS and EPP to aid in reducing clavicle injuries

Completely rebuild able

Lower bowl protection & ribbed design for more strength

FMF Factory 4.1 Exhaust System | 044447 tire Yamaha YZ250FX (2019-2022)All new incorporating the latest in Resonance Chamber Technology Patented core shape lowers sound level while maintaining maximum power output Patented canister shape increases internal volume for more sound absorbing material Patented chamber design to enhance and refine exhaust pressure Factory Forward Engineering centralizes mass and is less prone to crash damage Tuned exhaust with optimized core specifications for each application Innovative rear