GT5 Pro Racing 66cc/80cc Bicycle Engine Kit
How to Install The Top End of a 80cc 66cc 48cc 2-Stroke Bicycle Engine Kit
The Kit is upgraded with the GT5 CNC cylinder head.
Convert your bicycle to a motorized bicycle by adding a 2 stroke engine kit to it. The kit fits best on bikes with 25 to 30mm diameter front down tube and 70 Vee type frame like a mountain bike but can be installed on larger diameter tube frames with modifications. “Looks Cool” on the older beach cruiser type coaster brake bikes. The motor bolts to the bicycle frame in the center of the frame (additional mounting options available). A second Heavy Duty chain is attached from the motor to the rear wheel via a second sprocket attached to the rear wheel.
Starting:
2 stroke motor kits are started by “bump” starting them. While holding in the clutch, pedal the bike quickly. When you release the clutch after the bike gets to speed, it starts the motor.
The kit will average around 25-35 M.P.H depending on rider weight and rear sprocket gear ratio.
Gas Mixture
This bike motor kit comes with everything that you'll need except gas and oil since this is a 2 stroke, 2 stroke oil needs to be added to the fuel. Always mix gas in a gas can, not the gas tank. When the engine is new, it would need to be broken in with a richer mixture, after at least 1 tank of gas, then the mix can be “leaned out” (less oil). Never go less than 32:1 ratio (4oz of oil per Gallon).
- New Motor - 16:1 (8 oz of oil per gallon)
- After Broken in - 32:1 (4 oz of oil per gallon)
You will be able to stop or start the engine as you ride. This kit gets maximum fuel efficiency stock at around 100 miles per gallon.
The Motor will require some assembly, the top end of the motor must be installed.
Bicycle Motor Engine Kit Includes:
- GT5 Pro Racing 66cc/80cc Slant Head Bike Motor Kit (Standard Finish)
- comes with Racing CNC Cylinder Head. $90 Value!
- 3.0 HP. - Speed depends on rear sprocket ratio and weight of rider, weight of bike, the climate and the terrain being ridden.
- Standard Engine Finish
- Friction Clutch, Pedal Start
- Magneto With Solid State New Design Capacitive Discharge (CD) Ignition
- 2 Cycle air cooled gas / oil mix engine.
- 44-Tooth, 9 Hole Chrome Sprocket
- 3 Plate Sprocket Kit
- 2.0 Liter/0.66 Gallon Fuel Tank, Tear Drop Shape (Black Color)
- Chrome Muffler
- Push Button Clutch Lever And Cable
- Twist Throttle With Engine Kill Switch
- Fuel Line
- Improved Gas Valve
- Drive Chain Idler
- Improved NT Carburetor
- Chrome Lined Cylinder Wall
- Head With Center Fire Spark Plug
- 202 Crankcase Bearings
- Needle Bearings On Piston Wrist Pin
- 415 Heavy Duty Chain
- Chain Guard
- Steel Tube Intake
- Fuel Filter
- Tool Kit
- Universal Motor Mount
- All The Mounting Brackets, Gaskets, And Hardware Including Nylon Locking Nuts
- 6-Month Limited Warranty Included - FREE
- Free technical support within one (1) week after receiving the kit
- Extra Standard Slant Cylinder Head
GT5 66cc Slant Head (Standard Finish) Bicycle Engine Kit FAQs:
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Bicycle Requirements:
This bicycle motor engine kit fits most Mens 26" and larger bicycles which includes mountain, cruiser, chopper and road bikes with a V-frame with at least a 8.5" height clearance for the engine. Larger frame size requires drilling into bike frame and use of the universal face plate.
Dimensions:
This 66cc/80cc bicycle motor engine kit is about 8.5" height 7" length 5" width and fits on most standard 26" or 25mm 29mm frame bicycle frame tubes. Larger frame size requires drilling into bike frame and use the universal face plate. This engine kit only adds about 24 lbs to your bike.
We Can ship to PO BOXES at this time. For International and Canadian shipping we suggest UPS STANDARD. This does not cover Customs Brokerage, Duties, and Taxes… these are charged to the consignee on delivery). We have found that this is the cheapest way to send packages Internationally and to Canada.
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Gas And Oil Mixture For Fuel Ratio: (Use of a synthetic 2 stroke oil is recommended.) This bicycle motor engine kit is a 2 cycle/2 stroke design, therefore, a gasoline/oil mixture is necessary as follows:
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Skills And Experience:
The buyer may need some basic hardware skills, tools, and it takes roughly around 2-3 hours to install and to do some adjustments and fine tuning.
Notices And Disclaimer:
- We cannot guarantee that this kit will fit your specific individual bike(s).
- Operating a bike, motorized bicycle or bike with a bicycle engine kit installed involves some risk of serious bodily injury. Buyer accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages.
- Seller is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit.
- Seller is not responsible for misuse of this kit or any warranty after installation.
| Disclaimer: Down through the years China bike engine factories have always advertised their biggest engine as 80cc therefore we have listed them the same way on our website. However, the bore and stroke of an 80cc being 47x38mm only equals 66cc. Therefore there is no such thing as an 80cc bike motor and it truly does not exists and we want to make sure that you are aware of this. |
Our gasoline operated products are NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.
Customer Reviews
If you need help with installation or troubleshooting, kindly use our Builder Locator to find builders near you. Builders are experts with motorized bicycles.
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