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100CC BICYCLE ENGINE KIT: The four stroke engine offers a strong 3.5HP horsepower, a displacement of 100cc, a rated power of 2kw/h, plus a max rotating speed of 3600RPM, which gives you with strong power and accelerates your bike to the max speed of 50km/h.【110cc bicycle engine kit】The 110cc 2-stroke bicycle engine kit is powerful and durable,