125cc Dirt Pit Bike Zongshen Engine Moto with Manual Transmission Kick Start for Honda XR50 CRF50 Z50 XR70 Pit Bike TaoTao SSR Coolster X-Moto Roketa

125cc Dirt Pit Bike Zongshen Engine Moto with Manual Transmission Kick Start for Honda XR50 CRF50 Z50 XR70 Pit Bike TaoTao SSR Coolster X-Moto Roketa

Sale Price: Starting at: $339.95
Model Number: 308-999036
Shipping: $49.50
This Product not eligible for Flat Rate or Free Shipping. See Details
Availability: Ships from U.S Warehouse. Most customers receive within one week.

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125cc Dirt Pit Bike Zongshen Engine Motor For XR50 CRF50 Z50 XR 50 70 CRF 50 Pit Bike & Taotao SSR Coolster X-Moto Roketa 50cc 70cc 110cc 125cc Dirt Bikes

Model Number:#308-999036
Item Condition:Brand New High Quality Engine 125cc 4-stroke Dirt Bike Engine with Manual Transmission, Kick Start

Compatible Vehicles:Engine Manual 125cc fits most Chinese made Dirt Bike 50cc 70cc 90cc 110cc 125cc. It is good idea if you like to either replace your old engine or upgrade your Pit Bike to be faster or more powerful.

Compatible Models: XR50, CRF50, Z50, XR 50 70, CRF 50, Blade, Kinroad, Roketa, KPX, SUNL, Aimex, Alpha sports, BMS, BMX, Cool Sports, Baja, JCL, Taotao, Peace, JM Star, Jonway, Kazuma, KMD, Kymco, Lance, Linhai, NST, Redcat, Roketa, Tank, X-Treme, Yamati, Coolster, Terminator, Lynx etc.

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

Engine Model 308-999036 Engine Name 125cc Zongshen engine
Engine Type Single Cylinder, 4-Stroke, 2-Valve Displacement(ml) 123.7
Dimension(mm×mm×mm) 457×313×352 Net Weight(kg) 23.5
Max.Power(kw/r/min) 6.2/8500±5% Max.Torque (N.m/r/min) 8.5/7500±5%
Compression Ratio 9.3:1 Bore and Stroke(mm×mm) 54×54
Ignition method CDI Lubrication method Pressure and Splash
Min.Fuel Consumption(g/Kw.h) <=367 Starting method Kick
Clutch method Manual Wet Multi-Plate Gearshift Method Constant mesh, two stage transmission ,4-speed Gearshift
Chosen model standard model Applicable Motorcycle Type Cub-type motorcycles, cross-country vehicle for children, ATV

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

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

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


Please contact us before you buy if the parts will be shipped to Hawaii, Alaska and Puerto Rico.


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, Shift Lever, Kick Start Lever, Secondary Air Injection Pipe & Spark Plug, but doesn't come with Carburetor, Battery, CDI, Voltage Regulator, Ignition Coil etc.

Zongshen offers with this engine of the newest generation all tuning & racing fans best quality and highest performance state-of-the-art!

The engine comes with a high-quality cylinder head made from aluminum, a reinforced kick starter axle and extra large valves!

Furthermore it comes with a high-quality 4-speed Gearshift!

With 6.2 kW by 8500 rpm the engine reaches more than the triple performance of a standard CRF50 engine.

Best of all, it comes with High quality aluminum cylinder head and iron cylinder body.

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 Dirt Bike

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