FMF FACTORY 4.1 RCT ANOD SYS W/ TI M.B. W/C CAP YZ250F

Features:
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 endcap for simple installation of tuning tip inserts or spark arrestor
Titanium Megabomb included to optimize each machines power output