I'm not sure you can trust that to be accurate. It was the info on the selling page on pollin being misleading (they called the RPM at maximum power the no-load speed, which was actually 100% higher) that screwed me up with the motors for Rango. The datasheets on the selling pages often show the true figures direct from Johnson, but in the case of the lower revving motor, there is no datasheet available. No useful google results either. It might well be very low power; low RPM brushed motors are often mild, the popular s900 model was an exception.

That said, regardless of power output, that output shaft is weird as hell. I don't know if it can be removed/cut down, but even if it can be the shaft beneath is probably awkward.

The other model, at 17k no load, will need two stages of reduction. And having "racing" in the name suggests it's timed to be more powerful in one direction which would be a pain.

Sadly very little comes close to the s900.