Detail Engine Type: Single Cylinder, 4 Stroke Material: Aluminium, Cast Steel Engine Cooling Type: Air Cooling Ignition System: CDI (Not Included) Start Mode: Kick-starter; Electric Clutch Type: Manual Wet Multi-Disc Transmission: 5-speed, Manual Gear Shift Displacement: 200CC/250CC Minimum No-load Stable Speed: 1400 (1 ± 10%) R / min Compression Ratio: 10.0:1 Bore Stroke: 70*64mm/2.75*2.51inch Max Power: 11.3Kw/h Max Torque: 18N-m Max Speed: 7500rpm Horsepower: 14HP Air Inlet and Exhaust Valve Clearance: 0.05 ~ 0.07 mm (Cold State) Min Fuel Consumption: ≤354g/kW.h Spark Plug: D8TC (Not Included) Carburetor Type: PZ30 (Not Included) Primary Reduction Ratio: 4.055.