I have one that puts out full power 21A under PAS. Never been installed. The extra wire for those that haven't read about or figured it out is for another light. I am asking $50 plus shipping. I bought it from Eahora But sold the bike and bought a different one.
If you haven't already, get a new reprogrammed controller that fixes your limited pedal assist by going from a max of 6A to 18A. A noticeable difference specially when trying to climb hills. I just ordered a 500W motor that I'm going to experiment with and I'll let you know what happens. I'm...
I'm kinda looking into doing the same thing, I'm trying to find a 500W or 750W motor of the same size as the 350W that came on the bike. This way you can disassemble the motor and just swap out the internals and a new controller. Look up video of swapping on youtube. If I come up with something...