Type Single-cylinder, four-stroke, oil-cooled, lit, reverse Cylinder diameter 85 Piston stroke 70 Working volume 397.2 high performance 400cc motorcycle oil-cooled engine 185YMQ Model185YMQTypeSingle-cylinder, four-stroke, oil-cooled, lit, reverseCylinder diameter85Piston stroke70Working volume397.2Nominal Displacement400Compression ratio8.8: 1Starting wayElectricityIgnition wayCDIIgnition ...