1,50cc motorcycle engine 2,4-stroke 3,electric/kick start 4, ... cooled 5,good quality with cheap price XF 50cc motorbike engine detailsDisplacement50mlModel1P39FMB Type1-cylinder, 4-stroke, air-cooled Cylinder Size ... ±150r/minIgnitionC.D.I Valve modeOverhead Cam Lubrication waySpatter-type(Pump Ratio14/25) Clutch typeMulti-chip oil bath gear ... 50cc, 4-stroke, electric/kick start, cheap motorcycle engine