I recently saw that there are many ebicycle kits on amazon and ebay but am always leery of the real performance vs the advertised performance. I know and have experienced way too often with battery based devices and other electronics that are cheap, that you ultimately get-what-you-paid for ! And usually you paid for a big disappointment. :-(
So when I came across Bosch eBike Systems, I knew that they have a solid reputation across their entire line and its likely that they will stand by their claims of not just performance, but also of quality.
It was interesting to note that they are not just selling ebikes, but also the components so that if you already have a trail or street bicycle that you would like to upgrade to have electric powered assist at times, that its nice to have it, especially on really rugged trails up-hills !
Their line is pretty complete with motors, throttle, drive electronics, batteries, and displays :
So when you get a chance check them out and if you already have experience with them comment below.