Complete 47mm Bore 2 Stroke Motorized Bicycle Electric Start Engine Kit 80cc

Introducing the new 80cc electric start version.

includes improved ignition parts, an electronic start, a weed-eater carburettor, and a manual hydraulic clutch.

Please be aware that installing this engine kit is not recommended for beginners.  It will take longer and be more difficult to install than other engine kits on the market.  I would suggest looking at a few installation guides before making the purchase.  Extended crank sets are no longer necessary because this engine kit is a smaller size than the bullet train electric start kits.

Electric start (Requires a 24v battery NOT INCLUDED)

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:12.5:01

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)

Type of Sparking Plug: Z4C 14MM

Volume of oil Consumption: 2.5L/100km

Type of Clutch: hydraulic clutch

Cooling Mode: Natural air cooling

Fit for most type 24" 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers.

Fuel/Oil Ratio recommend by manufacturer: 

New Engine (500km or approx 3-5 tanks):

20:1 or 50ml of oil per litre.

After Break In: 25:1

25:1 or 40ml of oil per litre.

IMPORTANT (Please read):

1.      In order to create a suitable steal on the intake and stop any air leaks, please do not remove the plastic insert or o-ring that comes with your carburator.

2.      To prevent exhaust from snapping at welds, use the exhaust strapping kit that some kits come with if necessary. Alternatively, you can purchase a JB Weld Metal Strapping Kit. 

3.      To prolong the life of these components, it is advised to clean and regrease the clutch arm, bucking bar, and bevel gear every few weeks.

4.      Fuel/Oil Ratio recommend by manufacturer: New Engine (500km or approx 3-5 tanks): 20:1 or 50ml of oil per litre. After Break In: 25:1 or 40ml of oil per litre.

Using a different oil ratio than what is advised may speed up engine wear and cause engine seize. Don't assume the ratios instead, use a two-stroke mixing container to measure the oil. Our engine kits come with a 30-day warranty from the date of delivery. If you use a different oil mix ratio, this warranty will be void.