FMF Factory 4.1 RCT Exhaust - Titanium KX250F 2017-2020 042378 1820-1901 Descender V3 Jacket Distinctive design yields increased horsepower

Distinctive design yields increased horsepower and stronger throttle response throughout the entire rpm range

Stretch fourchettes for optimal levels of comfort and flexibility

allowing for an adaptive shape and enhanced levels of comfort and protection

This setup mounts forward and down from standard R3 mounting position

secure fit Screw-fixed buckle is replaceable

FMF Factory 4.1 RCT Exhaust - Titanium KX250F 2017-2020 042378 1820-1901 Descender V3 Jacket Distinctive design yields increased horsepowerRCT (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