AFCO Low Friction Suspension Kit Modified Ball Joints And Arm Bushings 78-88 GM Metric (Screw In Upper Ball Joint) - 200-1008Each kit contains: 4 high performance low friction ball joints and 4 lightweight, friction reducing control arm bushings. Less bind = lower lap times. Assembled kits for easy ordering. Reduced suspension stiction. Increases ability to transfer weight. Precision machining promotes front end alignment during usage (unlike O. E. rubber bushings). Kits contain lightweight lower bushings (nylon inserts for reduced weight and less friction).