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About product and suppliers:
        Alibaba.com offers 773 4 stroke bike motor kit products. About 63% of these are other bicycle parts, 2% are dc motor, and 1% are other electric bicycle parts. 

A wide variety of 4 stroke bike motor kit options are available to you, such as ce, ccc, and rohs. You can also choose from micro motor, gear motor, and tubular motor. As well as from 36v, 48v, and >60v. And whether 4 stroke bike motor kit is > 400w, 201 - 300w, or 351 - 500w. 

There are 773 4 stroke bike motor kit suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 4 stroke bike motor kit respectively. 

 stroke bike motor kit products are most popular in North America, South America, and Central America. 

You can ensure product safety by selecting from certified suppliers, including 28 with ISO9001, 9 with Other, and 1 with ISO10012 certification.