1,50cc motorcycle engine 2,4-stroke 3,electric/kick start 4,air cooled 5,good quality with cheap price XF 50cc motorbike engine detailsDisplacement50mlModel1P39FMB Type1-cylinder, 4-stroke, air-cooled Cylinder Size 39mmItinerary41.4mmActual Displacement 49.5mlCompression ratio10.0 Maximum power3.3(8500)kw/r/minMaximum Torque4.1(4500)N.m/r/minMinimum Fuel consumption450g/kw.hIdling1600±150r/ ...