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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 also a max rotating speed of 3600RPM, which gives you with solid power and accelerates your bike to your max speed of 50km/h.Recognized for their reliable trustworthiness, the four stroke bicycle engine package is t