Very easy to do, the motor is mounted in slots. It just slides back and forth. Even tho it's electric, your going to want to use a VERY SMALL amount of BLUE loctite on the motor screwed. This will keep it from re-adjusting itself. Also remember top speed isn't necessarily the fast way around the track. If you gear up, remember to keep an eye on your motor temps. Any brushless will overheat the motor if over geared. It'll be fast until you de-magnetize your rotor, then you'll have a highs priced paperweight.