125cc 4 Stroke Engine Automatic Transmission with Reverse Electric Start Motor 50cc 90cc 110cc Go Kart ATV

125cc 4 Stroke Engine Automatic Transmission with Reverse Electric Start Motor 50cc 90cc 110cc Go Kart ATV

Sale Price: Starting at: $319.95
Model Number: 308-999038
Shipping: $49.50
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Availability: Ships from U.S Warehouse. Most customers receive within one week.

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125cc 4-stroke Engine Motor with Automatic Transmission w/Reverse, Electric Start for 50cc 90cc 110cc 125cc Go Kart ATV

Model Number:#308-999038
Item Condition:Brand New

Brand New High Quality Engine, 4 Stroke, Automatic Transmission w/Reverse, electric start.
It fits most China made 50cc 90cc 110cc 125cc ATVs and Go Karts.

Compatible Vehicles:

  • 125cc all size ATVs
  • 125cc all size Go Karts

Compatible Models: Coolster, Taotao, Roketa, Kazuma,Terminator, Lynx, Redcat, Tank and more.

PLEASE NOTE: Please measure the physical size to be sure you get the correct one.

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/7500±500Rpm (5.7KW/7500±500Rpm) Starter Electric Starter
Max. Torque 8.0N.m/5500±500rpm Transmission Auto Transmission with Reverse
Min. Stable Idle Speed 1500±150r/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 2.18" (55.5mm)
Carburetor Type Plunger type carburetor Bore & Stroke 2.13" x 2.18" (54mm x 55.5mm)
Spark Plug Model A7TC Cylinder Working Volume 0.03 Gallon (120ml)
Fuel No. >= 87# Compression Ratio 9.0:1
Lubrication Model SF15W/40-SE Ignition Type CFW
Lubrication Capacity 0.20 Gallon (900ml)

1. Aluminum Cylinder Head and Iron Cylinder Body: Improves the heat dissipation capability, cuts the weight and increases the torque of the engine.

2. Crank Shaft: The engine is low speed with high torque and has large diameter bearings for crankshaft connecting rod, increasing the reliability of the bearings.

3. Air-cooled Engine: There are metal fins covering the outside of the cylinders and the heat generated by the engine is released directly into the air when the cooling fan blows air over fins. It has the advantages of simple structure, light weight, wide adaptability to climate change, rapid start up and no need of radiator.

4. High-flow Oil Pump: Reduces the wear of friction pairs and prolongs the engine life.

5. Lubricating Oil Strainer: Helps removing solid contamination from lubricating oil, largely reducing the wear of friction pairs and prolonging the engine service life.


The quality engine system production complies with the requirements of ISO9001:2000. All the engines have passed the 200-hour enhanced durability bench test and the 20000 km road test. The engine has the similar performance, facility and reliability as many brand engines, such as Honda, Yamaha, Kawasaki and so on. It also obtained the DOC authorization. Please do not compare our engines to other low quality engines, we only sell high quality engines.

All engines have the identification, gears and oil labels. You can purchase with confidence.

This engine assembly comes with Intake Pipe, Intake Pipe Gaskets, Gear Shift Lever, Sprocket Cover, Spark Plug, but doesn't come with Carburetor, Battery, CDI, Voltage Regulator, Ignition Coil etc.

Material: High quality aluminum cylinder head and iron cylinder body

Transportation: The oil in the engine will be drained out and the engine will be repackaged to avoid leaking before shipping. We package the engines with five-layer anti-earthquake carton boxes to ensure the items arrive in perfect condition.

Related Parts

To ensure smooth operation, we recommend customers replacing following parts together with the old engine: Carburetor, Battery, CDI, Voltage Regulator, Ignition Coil, Starter Relay, Air Filter, Gas Tank, Main Wire Harness Assembly, Switch Assembly, Throttle Cable, etc.

Please see below for links to some compatible parts. For more parts, please click here.

The appearance of the actual product may be different from the one in pictures, but it won't affect the nomal function, please subject to the our available products

Shipping Info

Please be advised that at this time we do not ship internationally including the following states: Hawaii, Alaska and Puerto Rico. We apologize for the inconvenience.

This part might fits these types of vehicles:

  • 125cc Full Size ATV

  • 125cc Middle Size ATV

  • 125cc Middle Size Go Kart

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