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Feature

Roadstar 2-stroke 50cc engine kit is perfect to upgrade the regular bike to a motorized bike,you can enjoying riding at a faster speed, which can reach 30km/h as fast as a motorcycle or scooter
Fits most 26" or 28' wheeled bikes with V-frame. The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1")
Key parameters: bore and stroke 40mm x 38mm=48cm3, Max. power 1.6Kw/6000r/min (3 horsepower/6000r/min), Super fuel-efficient, only consuming 1.5L fuel/100km
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km
Mode of Engine: Single cylinder, air-cooling, 2-stroke Natural air cooling; The rider needs some basic hardware tools, skills and around 2-3 hours to install. Add some lubricant into the air cylinder before starting

Description

Roadstar 50cc petrol gas engine kit is used to upgrade the regular bike to a motorized bike. After converting your bike, you can enjoying riding at a faster speed, which can reach 30km/h. It almost runs as fast as a motorcycle or scooter, making your outdoor trip more convenient. This engine kit fits most 26" or 28" bikes with V-frame.

Tips:
Before install the engine, please lubricate the inner components first and you should pour some lubricating oil into the cylinder bore from the spark plug hole, then drain off the lubricating oil and install the engine. Please keep in mind that the motor will use a mix of gasoline and oil. The oil is used as a lubricant. Without it, the performance andlongevity of the motor will be reduced.

Specifications:
1. Engine Mode: Single Cylinder, Air-cooling, 2-stroke
2. Bore & Stroke: 40mm x 38mm=48 cm3
3. Rated Power: 1.15Kw/5000r/min (1.6 horsepower/5000r/min)
4. Max. Power: 1.6Kw/6000r/min (3 horsepower/6000r/min)
5. Ignition Mode: CDI
6. Compression Ratio: 6:01
7. Driving Ratio: 18:01
8. Fuel Type: No.90
9. Type of Sparking Plug: Z4C 14MM
10. Volume of Oil Consumption: 1.5L/100km
11. Type of Clutch: Friction Plate / Dry
12. Cooling Mode: Natural Air Cooling
13. Speed Limitation: 30km/hour
14. Lubrication Oil: Oil for 2-stroke Petrol Engine (or Oil for 10W/40.10W/30)
15. Mixing Ratio of Fuel and Engine Oil: 16:1 for new sets, 20: 1 after Running 500km
16. Net Weight: 22.05 lbs / 10 kg
17. Suitable for: 26" or 28" Bicycle

Package Includes:
1x Full 50cc 2-Stroke Engine Motor Kit
All the needed mounting brackets, gaskets, and hardware