Product Detail Brakes, cables, seat belts and seats are installed 60-tooth sprocket Includes a universal engine mounting plate Ready for installation of a small 3-5 HP horizontal shaft gas engine with 3/4in. tapped 5/16in.-24 shaft with 3/16in. keyway Some assembly required . The "Stingray Complete Go-Kart Chassis Kit - Model# Stingray Go-Kart Kit" is best product for you. We recommended Stingray Complete Go-Kart Chassis Kit - Model# Stingray Go-Kart Kit