) Engine type: Twin-cylinder, Water-cooled, 4-stroke2) Bore x stroke: 76 x 71mm3) Displacement: 644ml4) Compression ratio: 8.4:15) Max. power / rotational speed: 20.6kW / 4,500rpm6) Rating power / rotational speed: 17kW / 4,500rpm7) Max. torque / rotational speed: 44N.m / 2,700-3,300g/rpm8) Economical oil exhaust :6.0L/100KM