Redcat Sumo Crawler gearing options?

[boy&hisdogs]

I'm going to Mickey Thompsons soon (bigger than stock) and I need some more torque. Even if i wasn't, it still need more torque.

I want to stick with the AAAs because I take my crawler places where there is no electricity to charge a lipo, and stay for so long that I can't afford enough lipos to keep my going."thumbsup"

I know the gears in the axles are pretty high so i was wondering if any other manufacturer's gears would fit, and If not, do I have any other options?

TL;DR: I want lower gears.

 

[KnutKase]

It has been stated that these take a gear motor like Pololu makes, find out what ratio you have then buy another with lower ratio. Also post results...