X-PRO 9 Tooth Starter Motor for GY6 125 cc 150cc Scooters Go Karts ATVs Moped Dune Buggys Quad 4 Wheelers Please identify X-PRO?. NO. 1 China Motorcycle Parts Brand, Better Done OEM.Starter Motor. Top Quality Guaranteed. It fits for most Chinese GY6 125cc/150cc Scooters, Go Karts, ATVs, please check pictures and specifications for compatibility Bolt Hole Spacing: 3.14"; 9 Teeth