CDHpower 2 Stroke Gas Bicycle Motor Engine PK80 66cc/80cc; Bore and Stroke 47mmx40mm; better adjusting Clutch a little before riding. 1 Super PK80 motor only. Gasoline motor: silver 80cc, Engine Type: Single cylinder, air-cooled,2-stroke Mixing Ratio of Fuel(90#) and Engine Oil: 16: 1 for New sets, 20: 1 after Running 500Km BorexStroke: 80cc:47mmx40mm Fuel consumption: 2-3 liter gasoline/100km,Maximum speed:30-40km/h Max.
