2003-2008 Yamaha YFM660 Grizzly ATV Rear Wheel Bearing Kit Contains all the Bearings and Seals Required to Re-Fit a Wheel Bearings are a Premium High Speed EMQ Quality, Featuring Low Drag, Triple Lip Rubber Seals to Provide Superior Exclusion of Water and Dirt, and Improved Grease Retention Steel Garter Spring on the Seal Guarantees Constant Pressure on the Axle Shaft Over the Life of the Seal Compatibility: 2003-2008 Yamaha YFM660 Grizzly This Vehicle Requires 2 of These Kits for a Complete Rear Wheel Bearing Replacement