DIRT BIKE ( off road bike,mini dirt bike) Air-cooled 4-strokes, international 5 shifts DescriptionSK250GY-6Bore x Stroke (mm072.5*55.7Piston Displacement ml229.9Compression Ratio9.5:1Max. Power (kw/r.min)10.5/7500+5%Max. Torque (N/r.min)16/6000+5%StartE/KTransmissionChainCoolingAir-cooledClutchWet-mutil, manualStroke, Shift4-strokes, international 5 shiftsTransmission ratioPrimary: 3.333 I: 2. ...