This set of wheelchair motors makes great heavy duty robot motors. One left motor and one right motor. They are right angle gear drives have been modified to include encoders. They are 24VDC and the operating speed is 120 RPM.
A ready to ship prebuilt All-Terrain 4WD robot. It features 10" pneumatic tires and IG42 078RPM Gear motors. Controller, battery, and charger included. Also included is a cover with 80/20 1" extruded aluminum rails.