FMF Factory 4.1 Exhaust System | 041575 g2ehgs -More packing volume-longer time between

-More packing volume-longer time between repacks

CR 125 2002-2007

KTM (19-22) 450 SXF

Features a flexible shaft that holds its shape

FMF Factory 4.1 Exhaust System | 041575 g2ehgs -More packing volume-longer time betweenAll 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