100cc Stroke Bicycle 2 Stroke Petrol Gas Engine Kit Petrol Bicycle Motor Conversion Complete Suitable For 26-28"" V-Frame Bicycles Super Fuel Efficient (36 Tooth Sprocket)

I bought two. Took about 4 hours to install on my bike. You might have to take a few links out of the chain; it’s long. I’ve rode about 50 miles on it so far and the only issue I’ve had is the exhaust pipe. It sits directly in the way of my left pedal. Also, the bolt holes stripped so I had to tap and die new threads in the engine to secure the exhaust pipe. Also used high temp JB weld. Other than that, I’m very happy with the engine and my wife loves it. Runs great. Worth every penny.

i had a bit of trouble understanding the instructions but it secures nicely to my bike and runs well. you get what you pay for, but you won’t be let down. better than i expected, easy to assemble and the price is good for what you get.