FMF Factory 4.1 RCT Exhaust - Aluminum KX250F 2017-2020 042377 1820-1900 Rear Auxiliary Fuel Tank Adjustable shoulder and sternum straps

Adjustable shoulder and sternum straps help heavy loads remain comfortable and balanced

precision alignment and durability

CNC machined from 6061 T6 Aluminum

The big tube step header is designed for large engines

Each set includes an extra adapter sleeve for mounting in either aluminum (14 mm ID) or steel (17 mm) handlebars

FMF Factory 4.1 RCT Exhaust - Aluminum KX250F 2017-2020 042377 1820-1900 Rear Auxiliary Fuel Tank Adjustable shoulder and sternum strapsRCT (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