- New All Balls Racing Swing Arm Bearing Kit. - Kit includes all of the components required to properly rebuild the swing arm bearing assembly for the applications listed below. - Needle bearing shafts are made with 52100 bearing steel that has been hardened and precision ground. - All metal bushings are case hardened and plated to prevent wear and corrosion. - POM composite washer bearings replace thrust needle washers for increased service life and superior resistance to water and dirt.