Yamaha Warrior ATV Rear Axle Ball Bearings Yamaha Warrior Rear Axle Bearing, Set of 2 bearings for use in the Yamaha ATV Warrior rear axle, Bearings are made of Chrome Steel, Yamaha Warrior Rear Axle bearings are pre-lubricated with grease, Yamaha Warrior Rear Axle Bearing has 2 rubber seals to protect the bearing from dust or any possible contamination.