New!!!! New!!!! New!!!! New!!!! Unused new 80cc two-stroke engine designed for bicycles Power: 3 horsepower, 80cc single cylinder, two strokes with air cooling Tank capacity: approximately 2 liters, fuel type 91 mixed with oil Mixing ratio: 1 liter of gasoline with 60 ml of oil during the first run of the engine; after 500 km, reduce the oil ratio to 1 liter of gasoline with 50 ml of oil It is very important to mix the oil with gasoline to avoid damage Speed: from 35 to 45 kilometers per hour Very easy installation, there is a tutorial on YouTube It comes with a user manual Fits on worker bicycles and mountain bikes There are pictures of the bikes it can be installed on The price is non-negotiable, serious inquiries only.