TQ metal bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the control arm, TQ steel composition results in a stronger component, Our full-ball metal stud provides smooth, consistent, rotational movement resulting in more responsive steering, Forged, CNC-machined shell leads to high-quality, precision-made performance and additional strength, Part Reference Numbers : CB60037PR CB60037 MS90158 GS90158 CMS90158 CK621230 K621230 RK621230 185109 2606153 CP1346 TK621230, Part Reference Numbers : CB60038PR CB60038 MS90159 GS90159 CMS90159 CK621229 K621229 RK621229 195109 2606154 CP1347 TK621229, Kit Includes: 2x Front Upper Suspension Control Arm and Ball Joint Assembly (Both Side), Kit Variations: K72-100003 K72-101159