Ok so i have now pretty much completed my first e bike conversion apart from a slight fault which stops the bike starting sometimes (er 30) unless batteries left unplugged for about 12 hours, New part is on the way that will hopefully fix this fault, have to first say thanks to the help of a few members on this forum for all the time they took answering a load of questions I had, I'm now looking at building a second bike but this time I want a bike capable of very fast speeds so was thinking maybe 5000w 106v rear hub motor to start with then maybe upgrading to 2wd further down the line, I have not bought any bike yet to convert but was thinking this time maybe going for a hard tail so id have plenty of room to mount bigger batteries and controllers, BMSbattery only sell up to 1000w so i had a look elsewhere and seen a few motors on ali express and arround 3000w @ 106v, also been looking at those crystalite wheels, Can anyone suggest a good high speed rear hub motor then i will buy a suitable bike to fit it to.