Condition: Brand New
Engine Type: Single Cylinder, 4-Stroke, 2-Valve, Air Cooled
Horsepower(KW/Rpm): 5.7/7500±500
Max. Torque(N?m/Rpm): 8.0/5500±500
Min. Fuel Consumption(g/Kw.h): 367
Bore*Stroke: 54mmx49.5mm
Displacement(cc): 120
Compression ratio: 9.0:1
Ignition: CDI
Lubrication: Pressure/splash
Starter:Electric Starter
Transmission:Auto Transmission with Reverse
Carburetor Model: PZ22
Oil capacity(ml):900

        125cc 4-stroke Engine with Automatic Transmission w/Reverse fits most Chinese made ATV Go Kart 50cc 70cc 90cc 110cc since the mounting holes are same, please do not buy if your engine with starter bottom mounted since the mounting holes are not same.It is 125cc 4-stroke Engine with Automatic Transmission w/Reverse. It is good idea if you like to either replace your old engine or upgrade your ATV or Go kart to be faster or more powerful.

   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.

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 service 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.

6. Built-in Reverse: Makes it easier to control your bike for moving forward and backward via operating the gear change pedal. Great features include user-friendly operation, high reliability, convenient installation and maintenance, etc.

The quality engine system production complies with the requirements of ISO 9001:2000. 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.

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.

Usage Tips

1. Do start the engine in an open place to let the exhaust gas gets full emission.

2.For Automatic Transmission Engines, please don't start is at reverse. For Semi-auto and Manual Transmission Engines, please do start at Neutral.

3. Check lubricating oil level and fuel level regularly. Make sure they are sufficient and not leaked.

4. Please do not accelerate until it has warmed up for 1-3 minutes if cooler start engine.

5. All new engines need a initial run-in time. Because the surface of the parts is not that smooth, they need a time to run-in to have the parts get smooth and work together better. The initial run-in should be at least 500KM. During the initial run-in, please avoid full-open throttle and don't start it over 80 percent of the top speed. Make sure to clear all fuel and change new when initial run-in over. Be strictly obey this will prolong the engine service life and has it working in good condition.

1. Fast Delivery.
Unlike many online retailers, we carry all our own stock and ship everything from our U.S. warehouse. Other online stores act as middlemen between you and a supplier, creating lag-time. Order from us and your parts are ready to ship in 24 business hours.

2. Know you're getting the right parts.
Because we handle all of our own stock, we are able to offer you the clearest photos and most up to date specs on all of our products. While many of our competitors' websites offer grainy and out of date spec sheets, our measurements are regularly made in-house to ensure order accuracy and customer satisfaction. Additionally, our hassle-fee return policy ensures you'll never buy a part you don't need.

3. Great prices.
As a direct importer, we cut out the middle-man and pass the savings along to you. Our prices are more than competitive, and we are the only company in our field offering free shipping on orders over fifty dollars.

4. Great value.
Our branch offices oversea allow us to inspect our supplier's factory lines, ensuring that our parts are OEM quality or better. This high standard of quality combined with our low prices, accurate specs, and fast delivery makes MotoPartsMax the leader in its field.