I spent 2 months building this from the ground up . I even laced the wheels myself, which is probably the biggest pain in the ass of this whole process. It will easily keep up with the stealth bomber ebikes that cost $11,000 but I was able to build mine for about 1/3rd that price. I got it programmed to run on a 72 volt LI-ion battery but it can be re-programmed to run on 60 volt- 48 volt - 36 volt., etc .
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