Engine: 70cc 2-valve, 4-stroke, single cylinder, air-cooled Starter: kick + electric start ... Transmission: manual with 4 speeds 1. Engine: 70cc 2-valve, 4-stroke, single cylinder, air-cooled2.Starter: kick + electric start ... 3.Bore x stroke: 50 x 49.5mm (70cc, 2-valve),4. Compression ratio: 8.2:1, 8.8:1, 9 ...