SWINGARM BEARING KIT RELVOLVE PSYCHIC YAMAHA WR250F WR450F YZ250F YZ450F YZ250 YZ250X
Needle bearing shafts are made with 52100 hardened & precision ground bearing steel and all metal bushings are case hardened & plated to prevent wear & corrosion.
On Swing Arm Kits we use POM composite washer bearings to replace thrust needle washers for increased service life.
Swingarm Bearing Kit Relvolve 28-1158 Yamaha WR250F 06-14 WR450F 06-15 YZ250F 07-13 YZ450F 06-09 YZ250 05-21 YZ250X 16-21