Substitution aluminum upright through set #350909. Aluminum right back uprights are especially designed for GT course and show the suspension system system geometry perfect for both nitro and electric GT. The aluminum uprights provide increased security on-/off-power and further mounting with set screw for repaid play. Machined from premium Swiss 7075 T6 aluminum the uprights may also be better and much more dependable than standard composite ones. Pair of 1. Fits left and right side.