Upgrade your dirt bike with the powerful and reliable Lifan 125cc 4 Stroke Engine Kit. This versatile engine is compatible with a wide range of models including CRF50, CRF70, XR50, XR70, CT70, Z50, and more. Ensure compatibility by checking with your local dealer.
This high-performance engine delivers a maximum power output of 5.8kW at 7500r/min and a maximum torque of 8.5N.m at 5000r/min. The semi-automatic, air-cooled single-cylinder design ensures efficient and reliable operation. With both electric and kick-start options, starting the engine is easy and convenient.

Technical Specifications:
Type: 4 Stroke Engine, Semi-Automatic, Air-Cooled, Single Cylinder, Electric/Kick Start
Bore x Stroke: 52.4mm x 55.5mm
Displacement: 120ml
Max Power: 5.8kW/7500r/min±375r/min
Max Torque: 8.5N.m/5000r/min±250r/min
Idle Speed: 1500r/min±100r/min
Min Fuel Consumption: ≤367g/kw.h
Ignition System: CDI
Gear Ratio: 2.833/1.706/1.238/0.958
Compression Ratio: 9.0:1
Primary Reduction Ratio: 4.059
Carburetor Type: PZ22
Transmission: 1-2-3-4, 4 Up
Start Mode: Electric/Kick-starter
Ignition Advance Angle: 15°±1°/1500r/min
Starting Performance: ≤15s
Clutch Type: Centrifugal Friction Clutch
Total Lubricating Oil Capacity: 900mL
Sprocket: 428-15T
Shaft: 20mm
Weight: 23kg
Package Includes:
1 x Lifan 125cc 1P52FMI-C Engine
Enhance your riding experience with the Lifan 125cc Engine Kit, designed for easy installation and superior performance. Whether you're upgrading or replacing your engine, this kit provides everything you need for a smooth and powerful ride.