Ridgeyard 80cc Bike 2 Stroke Gas Engine Motor Kit Motorized Bicycle Cycle
Features:

A complete engine kit for converting your bike
Heavy duty metal engine body for added durability
Super fuel-efficient, only consuming 2.5 litre fuel per 100km
Fast and smooth, can speed up to 45km/h
Comes with all needed hardware for easy installation
Fit for most type 26″ and 28″ bikes, such as mountain bikes, road bikes,cruisers, choppers.
Specification:

Mode of Engine:Single cylinder, air-cooling, 2-stroke
Bore & Stroke:47mm & 40mm
Rated Power:2.5Kw/5000r/min (3 horsepower/5000r/min)
Max Power:3.5Kw/6000r/min (5-6 horsepower/6000r/min)
Ignition Mode:CDI
Model of Chain: 415
Chain Length: 110 links
Compression Ratio:6:01
Driving Ratio:18:01
Fuel Type:No.90
Capacity of Tank:2L
Speed Limitation:45km/hour
Lubrication Oil: oil of 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
Type of Sparking Plug:Z4C 14MM
Volume of oil Consumption:2.5L/100km
Type of Clutch:Friction Plate / Dry
Cooling Mode:Natural air cooling
Package included:

1x Silver 80cc 2-stroke engine(the putt is straight or bent)
1x Sprocket clamp assembly with hardware
1x Exhaust muffler
1x Push button clutch
1x Heavy duty chain
1x Bearing chain tensioner / idler
1x Carburetor
1x CD ignition coil
1x Kill switch (on throttle)
1x Chain guard
1x Spark plug
1x Black gas tank with mounting brackets
1x Exhaust pipe clamp
1x Plug removal tool
1x Manual