FMF Spring and O-Ring Kit RM 125 1997-2007 011313 FMF011313 Geometry Hat Adjustment waist system features buckle

Adjustment waist system features buckle and stretch material for an optimized fit

tunes and adjusts your air/fuel ratio for peak performance instantaneously Can fine-tune the non-acceleration air/fuel curves using the Bluetooth® app Works with stock or modified engines

This design is the most efficient mating of exhaust gases to help generate more power Rear cylinder header pipe runs forward and wraps around the ignition cover for a sleek look and more clearance for the oil dip stick Heat shields cover the exhaust headers and the collector nestles beneath a simple cover Made in the U

- 2000-2002 Yamaha YZ 426 F Back: 2000-2002

Converts AC power into DC power

FMF Spring and O-Ring Kit RM 125 1997-2007 011313 FMF011313 Geometry Hat Adjustment waist system features buckleSpring and O ring kit for exhaust pipe