All metal bushings are case hardened & plated to prevent wear & corrosion; 28-1122 - Swing Arm Bearing Kit for 86-07 Yamaha TT225, TTR225, TTR230, XT225 Motorcycle's/Dirt Bike's | Motorcycle Parts Swing Arm Pivot Bearing Replacement Dirt Bike Suspension - Swing Arm Bearing Kit – SVS Powersports Swingarm Bearing Kit Description. All Balls Racing repair kit swingarm bearing. – Sleeves made of hardened steel with precision machined surface – needle bearings made of heat... Needle bearing shafts are made with 52100 hardened & precision ground bearing steel; All Balls 28-1122 SWING ARM BEARING KIT ; EWS MotorSports (31389) ; Approx. £49.09 ; Condition. NewNew ; Condition. New ; Quantity. 8 available All Balls 28-1122 Swing Arm Bearing Kit