RBS SUPERCHARGERS will be CLOSED UNTIL Monday Aug 17thRBS carries a high quality sealed ball bearing that a racer can use on most of the industries racing flywheels. Bearing is 2.045" O.D., .790" I.D. and .590" thick with a heat treated snap ring that will set the depth of the bearing going into the flywheel. Bearing is sealed to keep the grease in and the clutch dust out.