what is this motor all about?
 

It looks like a motor from a SpinBrush. He "Tweaked" it to be the "fastest" motor for X-Mods. I nioticed that ther are NO Capacitors attached, so you might notice some interefereance while using this motor. Also he is NOT including ANY pinion on this motor! So you would have to get a pinion puller and remove a pinion from one of your motors and install it on this thing.

Definitely a spin brush motor, or a hybrid. The shorter motor shaft gives it away.