Material: Steel & Rubber Quantity: 1 Kit Design and Structure: Flexible Compatibility: YZ250F, YZ250FX, YZ450F, YZ450FX, WR250F, WR450F Performance and Property: Torque Capacity Parts and Accessories: Needle Roller Bearing Oil Seal Sleeve, Pressure Bearing This maintenance kit includes a 24x17x3mm oil seal, a 24x17x12mm needle roller bearing, and a 17x10x12.5mm oil seal sleeve—key parts necessary for restoring the integrity of the shock absorber linkage.It is compatible with YZ250F models from 2009 to 2022, YZ250FX from 2015 to 2022, YZ450F from 2009 to 2022, YZ450FX from 2016 to 2022, WR250F from 2015 to 2022, and WR450F from 2016 to 2022.The inclusion of a pressure bearing with torque capacity ensures sustained responsiveness in dynamic riding environments.This is a compatible aftermarket component.Brand names are cited solely to show which devices it works with.