Brand new FULLY ASSEMBLED HIGH PERFORMANCE 80CC 2 STROKE  MOTORIZED BICYCLE ENGINE KIT

We had a blast with our last performance kit and guess what, we are making it even better now with MORE performance parts added. Every time when we see others putting couple clamps and then calling it performance upgrade, we just laugh. The performance parts we are putting in this time that only hard core riders used to get and we are making them available to everybody. LAST ONE, it will come with a full size 125cc motorcycle Keihin carb.

Buying upgrades separately is very costly, we are putting so many upgrades in this kit so the customer can get the best bang for their money with a single purchase.

Fits bikes with 24" + wheels.

Beefy Upgraded Components:

  • High performance carburetor and air filter to increase the intake of the engine, make sure you remove the elbow cable guide on top and thread the throttle cable directly into the cap
  • High compression performance cylinder head to increase horsepower and provide better cooling 
  • Balanced crank with ZAE50 hybrid connecting rod and type A piston
  • Preinstalled reed valve, this is an advance feature, it is best to use the reed with a full size motorcycle carb. If you feel your engine doesn't rev high enough, completely remove the reed valve and mount the HP carb directly onto the engine intake port. Included reed is for those who really know how to tune the carb, for beginners, it is best just don't use it.
  • 36T sprocket increase top RPM
  • Matching black high performance exhaust w/ expansion chamber to increase top end speed
  • Spring loaded performance tensioner gives you a smoother ride (added on 2/20/18)
  • 415 heavy duty chain
  • Speedometer kit gives you more visibility of the engine performance
  • U-mount for easier installation
  • Clutch removal tool

Engine kit includes

  • Cylinder Top End
  • Cylinder Bottom End
  • U-Mount kit
  • High performance Carburetor
  • Spring loaded tensioner kit
  • Reed valves kit
  • Petcock, fuel filter
  • Throttle assembly w/ all cables
  • Yellow button kill switch (better quality)
  • CDI & Ignition coil, spark plug
  • Black exhaust muffler w/ expansion chamber
  • Clutch lever
  • 415 heavy duty chain, chain cover
  • 36T high torque rear sprocket
  • Fuel tank
  • Mounting hardware
Important message must read before starting the engine !!!

When the engine starts fresh, you need to be careful during the break-in period or the engine will break or seize due to improper use.
  1. For the first two tanks, use oil mixture 16 : 1 which is about 8oz of oil per gallon of gasoline, don't go over 20 miles per hour and keep your rides in less than 20 minutes to let the engine cool down. When your engine is cool enough not burning your hand usually about 30 minutes, that's when you can ride again.
  2. For the second two tanks, use oil mixture ratio 6oz of oil per gallon of gasoline, follow the same guideline above when riding
  3. After 4 tanks, use oil mixture ration 4oz of oil per gallon of gasoline forever, DON'T go below of this ratio.

Following the above steps to ensure a long life engine for longer rides. Please note, the motor is NOT designed for racing, if you keep the throttle wide open at all time, eventually you will blow up the motor. Please ride responsibly :)

Multiple items can be combined shipping, please look at the other items, thank you.

 

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