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Shark Pro Racing 66cc/80cc Bicycle Engine Kit

  • $ 17900

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Shark Pro Racing 66cc/80cc Bicycle Engine Kit

Shark Pro Racing 66cc/80cc
*Minimal assembly required.

These Shark Pro Racing 66cc/80cc bicycle engine kits give 3.0 HP “the little powerhouse engine of the industry.”

Starting your Shark Pro Racing 66cc/80cc Bike Motor Kit (Standard Finish). Pedal normally or use engine power at your option. The engine starts quickly when the handlebar clutch lever is released while pedaling. Twisting the throttle controls the speed to 35 mph. Speed depends on rear sprocket ratio and weight of rider.

Shark Pro Racing 66cc/80cc Bike Motor Kit (Standard Finish) fits best on bikes with 25 to 30mm diameter 70 degree Vee type frames but can be installed on larger diameter tube frames with modifications. “Looks Cool” on the older cruiser type coaster brake bikes.
This bike motor kit comes with everything that you'll need except gas and oil! You will be able to stop or start the engine as you ride. There is no rope pulling needed and it gives more speed and gets around 150 miles on a gallon of gas. Please Tell a Friend about this product and help spread the word about motorized bike.

How are angle fire slant head motors different? The spark plug at the top is at a 45 degree angle instead of straight up. This gives the motor higher compression and adds up to an extra 3 MPH.
Get your Shark Pro Racing 66cc/80cc Slant Head Bike Motor Kit (Standard Finish) now while supplies last at this price.

2-Stroke Bicycle Motor Engine Kit Includes: 

  1. Shark Pro Racing 66cc/80cc Bicycle Engine
  2. Comes with Shark Racing CNC Cylinder Head. $90 Value!
  3. 3.0 HP - Speed depends on rear sprocket ratio and weight of rider, weight of bike, the climate and the terrain being ridden.
  4. Standard Engine Finish
  5. Friction Clutch, Pedal Start
  6. Magneto With Solid State New Design Capacitive Discharge (CD) Ignition
  7. 2 Cycle air cooled gas / oil mix engine.
  8. 44-Tooth, 9 Hole Chrome Sprocket
  9. 3 Plate Sprocket Kit
  10. 2.0 Liter/0.66 Gallon Fuel Tank, Tear Drop Shape (Black Color)
  11. Chrome Muffler
  12. Push Button Clutch Lever And Cable
  13. Twist Throttle With Engine Kill Switch
  14. Fuel Line
  15. Improved Gas Valve
  16. Drive Chain Idler
  17. Improved NT Carburetor
  18. Chrome Lined Cylinder Wall
  19. Head With Center Fire Spark Plug
  20. 202 Crankcase Bearings
  21. Needle Bearings On Piston Wrist Pin
  22. 415 Heavy Duty Chain
  23. Chain Guard
  24. Steel Tube Intake
  25. Fuel Filter
  26. Tool Kit
  27. Universal Motor Mount
  28. All The Mounting Brackets, Gaskets, And Hardware Including Nylon Locking Nuts
  29. 6-Month Limited Warranty Included - FREE
  30. Free technical support within one (1) week after receiving the kit
  31. Extra Standard Slant Cylinder Head

How to Install 80cc 66cc 48cc 2-Stroke Bicycle Engine Kit

Shark Pro 66cc Slant Head (Standard Finish) Bicycle Engine Kit FAQs: 

  • Question: How much weight will this engine kit add to a bike?
  • Answer: The 48cc, 66cc/80cc engine kits will add 24 lbs to your bike. The 49cc engine kit will add 31 lbs to your bike. Note: We suggest a 26" Men's standard V frame bike.
  • Question: What fuel do I use for this engine kit?
  • Answer: This 2 stroke stroke motor kit requires an Oil And Gas Mixture as follows:

    When New: 16 to 1 (8oz per Gallon) 
    After 2 Tanks Of Break In: 32 to 1 (4oz per Gallon)

    You should get 100-150 Miles per gallon and achieve 20-40 MPH depending on climate, altitude, bike weight and rider weight
  • Question: How do I start and stop my bike?
  • Answer: The starting and stopping of this two stroke motor kits is this: 

    You can still pedal bike like normal with clutch lever held in or locked in with button. 

    To Start: It's just like riding a bike normally, hold in the clutch and pedal the bike to get some speed, then release the clutch to "Jump Start" the motor. If you know of or remember jump starting a Manual VW Bug this start method is the same.

    To Stop: While the engine is running you can hold in the clutch and the engine will idle. Push the Kill Switch on the throttle to kill the motor. The clutch must be held in when the bike is in motion or the motor will keep running.

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.


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.

* Orders received Monday - Friday by 3:00PM EST are eligible for 
Same Day Shipping! Except for USPS which ships the next business day.

Same Day Shipping Available 
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.

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:
  • When New: 16 to 1 (8oz per Gallon)
  • After 2 Tanks Of Break In: 32 to 1 (4oz per Gallon)
The engine crankshaft bearings are lubricated from the oil in the gas mix. A rich break in oil mixture ensures bearings will not cease during engine break in period.

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.

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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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