100CC BICYCLE ENGINE KIT: The 4 stroke engine features a sturdy 3.5HP horsepower, a displacement of 100cc, a rated power of 2kw/h, and a max rotating speed of 3600RPM, which supplies you with strong power and accelerates your bike into a max speed of 50km/h.Hub: the center part of a wheel that contains bearings and is also where by the spokes attac… Read More