... ,electric/kick start 4,air cooled 5,good quality with cheap price XF 50cc motorbike engine detailsDisplacement50mlModel1P39FMB Type1-cylinder, 4-stroke ... .m/r/minMinimum Fuel consumption450g/kw.hIdling1600±150r/minIgnitionC.D.I Valve modeOverhead Cam Lubrication waySpatter-type(Pump Ratio14/25) Clutch ... Transmission TypeRegular meshing gear 50cc, 4-stroke, electric/kick start, cheap motorcycle engine