SwingArm Bearing Kit - Yamaha (2006-2017) - WR250F, WR450F, YZ250F, YZ450F Our off-road premium swing arm kit is designed from ground up to be the most comprehensive OEM replacement kit available on the market. It contains all OEM quality elements required for a complete overhaul of your swing arm bearings for Yamaha dirt bikes. Contains: Bearings x6, Collars x2, Pins x2, Seals x4, Washers x4 52100 Chrome Steel If you have any questions about the product or product fitment please ask and our team will promptly answer you.