... ", 26" or 28" single speed or multi speed with v-frame bike into a motorized bike. It is the best engineered ... at the lowest wholesale price direct from us.Motorized Bicycle Engine Kit, Gasoline Engine Kit for 48cc, 60cc, 80cc Specification: Model50cc(48cc) 60cc80cc ... h35km/h38km/hMax. Load capacity120kg150kg180kgFuel Type90#90#90# Motorized Bicycle Engine Kit, Gasoline Engine Kit for 48cc, 60cc, 80cc