FMF Racing Gnarly Pipe for KTM 250 SX/EXC/MXC/300 EXC/MXC 98-99FMF Gold Series Gnarly Pipe KTM 250 SX 250 EXC 250 MXC 300 EXC The FMF Gnarly Exhaust was designed to be rugged, and improve bottom end power to help get you through the toughest terrain. Developed and tested with the off road rider in mind, the Gnarly will shift and increase the power band so it comes on sooner, pulls harder through the mid range, and smoothes out the top end RPM surge. Constructed of thick nickel plated 18 gauge carbon steel, this