100CC BICYCLE ENGINE KIT: The four stroke engine features a strong three.5HP horsepower, a displacement of 100cc, a rated power of 2kw/h, as well as a max rotating speed of 3600RPM, which delivers you with robust power and accelerates your bike to a max speed of 50km/h. Fork: the part https://bikeenginecomparison09864.myparisblog.com/35573110/a-review-of-bike-engines-explained