All Balls Racing - Swing Arm Bearing & Seal Kit (28-1013)All Balls swing arm bearing and seal repair kit. Kit contains all of the components required to properly rebuild the swing arm bearing assembly 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