It takes 14.4 volts to power it. The Bullhead is then controlled by a Novak speed control, and an Airtronics 2 channel pistol grip radio. The motors are Trininty brand 14 turn doubles, with adjustable timing. I have also added the Hobbico full bearing set, and Pull Master full metal gears. The 4wd, 4ws chassis with my modifications provides a top speed of around 20mph, and enough power that I can pull myself around on a skate board with it all day long and not cause any damage. Cost to build - SCARY!!!