Iglobalbuy 50CC 2 Cycle Petrol Gas Engine Motor Kit for Motorized Bike Gasoline motor: 50cc Engine Type: Single cylinder, air-cooled,2-stroke BorexStroke: 50cc:40mmx38mm Ignition: D. I. Ignition magnetoes non-contact induction power storage Mixing Ratio of Fuel(90#) and Engine Oil: 16: 1 for New sets, 20: 1 after Running 500Km This bike motor kit comes with everything that you will need, except gas and oil!