Flying Horse 38cc 4-Stroke Engine Assembly


FREE SHIPPING to Continental US

Sale price$150.95


Compact yet versatile in its design the 38cc 4-Stroke Motorized Bicycle Engine Assembly is the go-to engine for motor bike enthusiast looking for flexibility. Unlike most 2-stroke engines that feature a pedal start clutch, the 38cc engine features a centrifugal clutch that utilizes a pull start. This enables the rider to start riding immediately and avoids the tiring and cumbersome start-up of a 2-stroke. Engineered with a slim all-in-one design, this engine contains everything you need. It is even compatible with a wide array of transmission types such as friction drives and chain drives. So, whether you are looking for a new engine to fit your bike build or are looking for a higher performance engine, you can trust the 38cc 4-Stroke Motorized Bicycle Engine to get the job done.

The Flying Horse 38cc Lock & Load Friction Drive bike engine just made motorizing your bike a lot easier. Unlike other bicycle engines that mount in the center of your frame, friction drive motors mount directly over your wheel, which gives you a wider range of bicycles you can use with this motor. Its compact design also eliminates the need for a bulky gas tank on your frame- there’s one built right on to the engine. And because it mounts over your bike’s wheel you don’t even need to install a rear drive sprocket.

Of course, you still receive everything you’ve come to expect from Flying Horse: quality parts and excellent service. So if you’re looking to motorize your bike without all the hassle other bikes will give you, get ready to rock with the Flying Horse 38cc Lock & Load Friction Drive 4-Stroke Bicycle Engine Kit

Engine Specifications:

  • 37cc Engine is 8”x 10” x 9.5” and fits on to nearly any bike with standard tires. The mount can support tires up to 3” in width.
  • Goes over 15 MPH and gets around 100 miles per gallon
  • Displacement: 37.7cc
  • Type: 4-Stroke
  • Bore x Strone: 40x30mm
  • Max Output: 1.0kW/ 6500r/min
  • Max Torque: 1.67Nm/ 5500r/min
  • Air cooled
  • Transistor Magneto ignition system
  • Counter Clockwise PTO Shaft Rotation

Package Includes:

38cc Lock & Load Friction Drive 4-Stroke Engine (Note: this package only includes the 38cc engine only, and does not include a friction drive mounting kit)

Disclaimer: Operating a bike, motorized bicycle or bike with a bicycle engine kit installed involved some risk of serious bodily injury. Buyer accepts responsibility for any and all vehicle operations 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. Not all motorized bicycles are allowed on road use. We make no guarantee as to the road legality of the bicycle engine kits. The risks that the Seller, Niche Webstores Inc. is not responsible for include among other things: falling, collisions with pedestrians, street, highway or roadway vehicles, striking obstructions or another person, unsafe weather conditions including temperature exposure, hypothermia, sunstroke, sunburn, heat exhaustion, and dehydration.

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Customer Reviews

Based on 5 reviews
Runs Good

I recently purchased an engine from bike berry and it's running very well. I had a professional installer and all is working properly so far so good.

I think it'll last me quite a while to get around to close places.

thanks bike berry.

Friction motor

I sure enjoy the little engine, a good help for a 70 yo crippled. Easy to put together and starts right up once the oil and fuel is in it.
I would improve the set up video by being more informative on how to instal the kill switch and throttle. Otherwise a pleasure to have.
I am testing it to see if it would be marketable in Haiti.

Nice engine

Runs great!


Motor runs great. Easy to install.

Jesus Ordonez

I think it's a very reliable motor ' being it so small' you whould think it would not come up to par but it does, and hardy too I have droped it with my bike on it and it always runs it's incredible.

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