This is an electrified hub with a battery that you can put on your regular bike front wheel to make it electric! I bought it while living in seattle and it was the best thing ever for helping getting up hills! If you don't want to peddle you can even just push the button that attaches to the handle bars for a free ride. The battery will take you 12 miles.
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The version is "the sprinter" check it out on electric-bike-kit.com
700cc wheel. Only rode for 6 months then moved to sequim and havnt put my bike together unfortunately. Selling because I am moving to FL now.