wholesale of 140cc engine , which was designed for dirt bike with the best price here follows : FOB CHONGQING or JIANGMEN with starter, shifter, breather, CNC oil coolerDetails : Bore×Stroke: 56mmX57mmMax power: 8.0KW/7500r/minTorque : 9.5N.m/5000r/minLowest fuel consume: 367g/KW.hAnd it's 4 stroke, rear manual clutch, N 1 2 3 4 gear. Start at any gear, oil-cooling, kick start.High performance of inner rotorkits, magneto kits.