We just added the Pololu Zumo Robot Kit to our online store. This combination deal is an affordable kit with most of the parts you need to build an Arduino-controlled Zumo robot. It consists of a Zumo Shield for Arduino, a Zumo chassis kit, and a Zumo blade.
If you’re looking to looking to sumo wrestle a robot, this robot contains the components necessary to build a small, high-performance tracked robot platform that is compact enough to qualify for Mini Sumo competitions.