CDHYD100 2 Stroke 100cc Petrol Gas Motor Engine Only-Motorized Motorised Bicycle

2 Stroke Gas Bicycle Motor Only YD100-79CC/80CC Engine Kit; Bore and Stroke: 50mm x 40mm. CDHPOWER 2 Stroke YD100 Gas Engine ONLY, NO manual, YD100-50mm 79CC/80CC Engine;. Bore and Stroke: 50mm x 40mm; Better adjusting clutch a little before riding;.