Re: ebay kit vs pistonbikes kit
My advise is buy a Flying Horse motor, from whoever you like best. I bought 1 from BikeBerry. It cost more, but it's the best motor I've ever had. As a matter of fact, the 2 Flying Horse motors I've owned were the 2 best I've ever sampled.
The last 3 motors I bought on eBay weren't nearly as good.