Moose Racing Sx-1 Rear Wheel Bearing Kit Yamaha 125cc-450cc Keep everything rolling smooth and friction free with a premium bearing and seal kit from Moose Racing. Features: Kits include all bearings and seals to rebuild one wheel Premium high-speed bearings with low-drag double lip seals Nitrile elastomer outer seals to keep water and dirt out which extends bearing life Packed with Chevron Sr1-2 high performance grease with rust and oxidation inhibitors Note: Images are for reference only, actual bearings will vary per make and model.