Brushless drivers are ok for the Brushless motors but the same board needs to replace a burned out driver in an old bike.
The old bike has a 200W motor run at 36v for a total of 5.55555) amps and the FQA160's are rated at 160amps.
However, I must say that those ESC's do look sweet.
In this case, consider something like this:
Is way cheaper.