This is an optional Traxxas Aluminum Rustler 4X4 Rear Shock Tower, intended for use with the Rustler 4X4 and 4X4 VXL models. These 7075-T6 aluminum shock towers come in fiery-red, bright-blue or green-anodized to add eye catching style to your set-up. This set includes one rear shock tower, one body mount bracket and hardware.