EXHST AL4.1SS/MGBMB KX250

Factory 4.1 RCT Exhaust System

• RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
• Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
• FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
• Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
• Meets AMA and FIM sound requirements
• QuietCore 94 dB insert included
• Made in the U.S.A.