Aluminum backside uprights are specially created for GT course and have the suspension system geometry appropriate both nitro and electric GT. The aluminum uprights provide increased security on-/off-power and additional mounting with set screw for paid off play. Machined from premium Swiss 7075 T6 aluminum the uprights may stronger and more reliable than standard composite ones. The complete pair of aluminum uprights includes graphite camber website link mounting dish, ball-bearings and all add-ons for a primary replacement for the standard hubs. The top of carbon dietary fiber extensions are machined from lightweight carbon dietary fiber to cut back the weight and have 4 camber website link roles. The aluminum uprights are more powerful therefore ensuring greater reliability and increased life time. The whole set includes outside 8x16x5mm ball-bearings and inner 13x19x4mm ball-bearings.