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- Engine /
- Rebuild Kits
Product Description

Powerful Engine
The 4-stroke engine can provide higher intake and exhaust efficiency, it can provide stronger power.
Effective Cooling System
By adopting an air cooling system, the temperature of the engine can be quickly reduced, effectively preventing overheating.
Durable Design
Designed with premium aluminium and cast steel, this engine has high hardness, wear resistance.
Precise Control
Its 4-speed manual clutch transmission provides you with high-precision gear shifting control.

Details
Engine Dimensions: 42.5 x 27 x 23cm/16.73 x 10.63 x 9in
Package Size: 48.5 x 37 x 35.2cm/19.1 x 14.57 x 13.86in (Outer); 46 x 31.5 x 25.5cm/18.1 x 12.4 x 10in (Inner)
Package Included
- 1 x CRF50 125CC Engine
- 1 x Kick Starter Lever
- 1 x Gear Shift Lever & Carburetor
- 1 x Intake Manifold
- 1 x CDI
- 1 x Sprocket Cover
- 3 x Intake Gaskets
- Some Screws for Assembly
Specification
Engine Type | Single Cylinder, 4 Stroke |
Material | Aluminium, Cast Steel |
Ignition System | CDI |
Start Mode | Kick-starter |
Clutch | Wet Multi-plate |
Transmission | 4-speed, Manual Clutch |
Displacement | 125CC |
Compression Ratio | 9.0:1 |
Max Power | 6.5 kW/7500r/min±375r/min |
Rated Power | 5.6 kW/7500r/min±375r/min |
Max. Torque | 8.0 Nm/5000r/min±250r/min |
Idle Speed | 1500r/min±100r/min |
Min. Fuel Consumption | ≤367g/kW.h |
Lubricant Capacity | 900ml |
Lubricant | SAE15W/40-SE, 4-stroke Gasoline Engine Oil |
Spark Plug | A7TC |

Notes
1.Please note this product is for motorcycles only.
2.Please note that there may be oil stains on the received package. This situation is normal. Please rest assured to use it.
3.The installation is very complicated, so we strongly recommend that this engine be installed by professionals.
4.Please check the lubricating oil lever before driving.
5.Please change the oil and clean filter every 300km and do not exceed 50km/h maximum during the first 500km.
6.Please note that gearshift is prohibited unless the accelerator is loosed.
7.Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before ordering.
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