... brake, 250cc dirt bikeEngine TypeFour-Stroke, Single Cylinder, Water Cooled, Electric StartDisplacement243ml (250cc)Bore x Stroke69 x 65mmCompression Ratio10.5:1Max ... :Loncin, 250cc SOHC Air-cooled. Single cylinder, four stroke, Kick start and E-Start, manual clutch.Bore X Stroke:> 65.5 mm×66 ...