Xerun 80A combo

I was looking through hobbypartz and found the 80a 4168 combo for 139. I figured this would be a good combo for my Maxxslash, and for just 20 more then a Medusa would have cost They also had some Blue lipos 5000mah 20c batteries in stock so I picked a couple of those up to try. I figure for an under 8lb vehicle, this should be good

So has anybody ran this motor? Anyone seen the included pinions? I'm really wondering if they will even be usable.