4borg motor specs

I don't see a 4borg forum.... So I posted here figuring this was as close as I could get.

I'm looking for the motor specs for the motors used in the 4borg kit.

I'd like to replace them with something that rotates faster. The stock motors have lots of torque but not much speed. I've found what I think are replacement motors (size, shape, voltages), but I'm not sure what the RPMs of the stock motors are and don't want to over do it.

Thanks,

Doug