WHAT DOES ENGINE BIKE EXHAUST MEAN?

100CC BICYCLE ENGINE KIT: The four stroke engine boasts a strong three.5HP horsepower, a displacement of 100cc, a rated power of 2kw/h, in addition to a max rotating speed of 3600RPM, which supplies you with solid power and accelerates your bike into a max speed of 50km/h.Powerful engine for faster speeds. Compatible with several bike types. Highly