Engine Type: Single Cylinder, 4-Stroke, 2-Valve Gears: Automatic with reverse engine. Automatic Transmission w/Reverse, electric start for 50cc 90cc 110cc 125cc Go Kart ATV This engine assembly comes with Intake Pipe, Drive Sprocket, Sprocket cover & Spark Plug, but doesn't come with Carburetor, Battery, CDI, Voltage Regulator, Ignition Coil etc. Best of all, it comes with High quality aluminum cylinder head and iron cylinder body. When purchasing this engine, please pay special attention to whether the plug-in is compatible with your bike. If it not, you need to purchase an additional plug-in for modification. ATV Go kart 125cc 4-stroke Engine with Automatic Transmission w/Reverse, Electric Start

Engine Model: 308-999038
Ignition Method: CDI
Engine Type: Single Cylinder, 4-Stroke, 2-Valve
Lubrication: Pressure/splash
Cooling System: Air Cooled
Fuel Supply: Carburetor Atomization

Horsepower: 7.64HP/7000-8000Rpm (5.7KW/7000-8000Rpm)
Starter: Electric Starter
Max.Torque: 8.0N.m/5000-6000rpm
Transmission: Auto Transmission with Reverse
Min.Stable Idle Speed: 1350-1650r/min
Clutch: Automatic Multi-plate Wet Clutch

Min.Fuel Consumption: 9.65oz/HP.h (367g/Kw.h)
Cylinder Diameter: 2.06" (52.4mm)
Carburetor Model: PZ22
Piston Stroke: 1.95" (49.5mm)
Carburetor Type: Plunger type carburetor
Bore & Stroke: 2.13" x 1.95"(54mm x 49.5mm)

Spark Plug Model: A7TC
Cylinder Working Volume: 0.03 Gallon (120ml)
Fuel No.: >= 87#
Compression Ratio: 9.0:1
Ignition Type: CFW
Lubrication Capacity: 0.20 Gallon (900ml)