... ,single cylinderAir-cooled,2-stroke,single cylinder Displacementcm349 (4-stroke, Manual Clutch)49.5 (4-stroke, Automatic Clutch)79 (2-stroke)cm3Max ... power (Kw/r/min)2.4/7500 (4-stroke, Manual Clutch)2.0/7000 (4-stroke, Automatic Clutch)4.92/6000 (2-stroke)(Kw ... .m/r/minBore * strokemm39.0X41.4 (4-stroke)47.0x45.6 (2-stroke)XmmCompression ratio8.8:1 (4-stroke, Manual Clutch) 9.1:1 (2-stroke)