Lightweight yet ultra-strong backside upright molded from unique graphite composite item. Features larger outside 8x16x5mm ball-bearing for increased dependability and life-span. Graphite rear upright is very strong and makes the rear of car very stable, yet is incredibly light using some load from the rear suspension system system. Improves bump absorbing and managing on bumpy tracks. To give the set-up choices, another lower roll-center modification destination had been added. Suited to many track conditions, particularly for medium- and high-traction tracks. The smart design allows comparable upright become utilized on both remaining & right edges. The low suspension pin in which a large part upright sits features 2 shims for wheelbase adjustment. The rear upright features incorporated geometry corrections including: camber, top and reduced roll center and wheelbase.