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Black Slant 80cc Engine Kit W/Upgrade CDI Coil

Was: $249.99
Now: $129.00
MSRP: $199.99
Your Savings: $70.99 (35.5%)
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66/80cc Fast Bike 2 Stroke Bicycle Engine Kit


The Fast Bike 66/80cc engine kit is perfect for those who are on the move. This pedal start engine kit fits on most bicycles with 24” – 26” bicycle frames. The speed ranges from 20 – 40mph and 100 – 150 mpg. To start the engine you simply pedal the bike and release the clutch lever and the engine will start. This engine kit will add about 24lbs to your bike and adding this engine will not take away the function of a regular bicycle.

Product Dimensions

Bicycle engine kit is about 8.5” in height 7” length and 5” width. The bicycle engine kits fits on standard tubes 25mm to 29mm in diameter. Some larger frames either require a ubolt or Tbolt. Installation takes anywhere from 2 to 3 hours and can be done with basic tools.

Bicycle Motor Engine Kit Includes

  • 2 Stroke Engine Kit
  • NT Carburetor
  • #415 Heavy Duty Chain
  • Gas Tank – 2 Liter
  • Large Frame Mount Bolt On
  • Fuel Valve
  • Fuel Line
  • Throttle handle and Kill Switch
  • Throttle Cable
  • Exhaust Muffler Pipe
  • Rear Wheel Conversion – Rubber, Brackets, Nuts and Bolts
  • 44 Tooth Chain Sprocket with 9 Holes
  • Chain Tensioner Idler
  • Motor Chain Guard
  • Fuel Filter
  • CDI
  • Magneto
  • Required Hardware and Gaskets
  • Upgraded Bearings
  • Spark Plug
  • Heat Shield Spring
  • Clutch Arm Spring
  • Push Button Clutch Lever
  • Clutch Cable
  • Large Frame Adapter
  • User Manual Online for Download

Gas and Oil Mixture for Fuel Ratio: Use of synthetic oil is recommended

  • When New 16 to 1 gasoline to oil ratio or 8oz oil per gallon gasoline
  • After 2 tanks of break in – 32 to 1 gasoline to oil or 4 oz oil per gallon of gasoline



Operating a motorized bicycle or bicycle engine kit carries a risk of bodily injury. The owner / rider accept full responsibility for any and all vehicle operation that may lead to personal injury, social distress economic loss, other losses or cost and damages. Fast Bike Motors is not responsible for damages resulting in operation of this bicycle engine kit.

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 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.

It is the customer’s responsibility to check with their local and state laws regarding the install, use and purchase of this engine kit. This applies to on and off road in your state.




Customer Reviews

Reviewed by kristoph , 12/19/2015

I have over 5000 miles on mine it smokes a little more than when it was new and lost a little bit on the hills but starts and runs every time

Reviewed by Cj , 10/24/2015

good way to expand a stressful day

Reviewed by michaelmarks697@yahoo.com , 10/08/2015

First experience with a bike build.Use locktite just about everywhere. No one bulilds these things in a couple hours. Take your time and watch other builds on you tube. There are no instruction

Reviewed by Giuseppe , 01/08/2015

It is great

Reviewed by Michael B, 11/09/2014

This is a good runing eng and an ease to mount .

Reviewed by Leo , 05/14/2014

For those of you looking to buy this kit but have doubts let me tell you my experience thus far with it. The price is very reasonable compared to other kits and there isn't much of a difference (yes I looked up pretty much every site there was). The installation took me about a day and a half because I didn't really know what I was doing and sorta messed up the first time. NOTE: the instructions that come with this kit though helpful, don't cover every possibility. I recommend you look up a video on YouTube examining step by step how to put it together (I recommend the one from bikeBerry). Also if your bike has a coaster brake, pedal back to brake, be VERY careful uninstalling it and do not take out the whole drum from within otherwise you will mess up your bike big time. I only upgraded the carburetor and my top speed was 33.6 and I am very pleased. I use it to travel far distances and I am surprised how durable it is.
If you are looking to get this, DO IT!

Reviewed by jake11 , 03/31/2014

who old do you have to be to use it ?

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