Hot Racing Steel single speed conversion for the Traxxas Jato Stadium truck features: - Optional part used to convert the 2-Speed transmission to a single speed - 20/31T single speed primary gear you will receive: - one (1) single speed Top shaft - one (1) single speed primary gear 20T (installed) - one (1) single speed primary gear 31T (installed) - one (1) 5mm e-clip - three (3) screw pins (2 installed) - one (1) aluminum spacer - two (2) shims requirements: - removal of 2-speed transmission off of Jato and install single speed conversion