FMF Factory 4.1 Aluminum RCT Slip-On Exhaust Muffler w/Carbon Tip (042369)

FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage Spark Arrestor and Quiet Core 94db insert included 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 RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output Compatible with stock header or FMF header 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 Made in the U.S.A. Fitment 2019-2023 Kawasaki KX450 2021-2023 Kawasaki KX450X