The Ground Force's quiet multiple speed, chain-driven motor is driven by two 12-volt batteries, which transport approximately forty five minutes of drive time per charge. Appropriate for riders ages eight and older, the smooth silver-and-black Ground Force go-kart attains a max speed of twelve mph, which makes it an ideal kart for zipping around flat trails or even a cul de sac. The Ground Force, which measures 41 by 16 by 29 inches (W x H x D), supports drivers weighing as much as 140 lbs is backed by a 90-day guarantee. Some assembly is necessary, though the tools are built-in. And operation is really a breeze owing to the hand-controlled accelerator and hand brake. Other particulars comprise a tough steel frame, a shoulder seat belt, plus a flag. The molded aluminum wheels and solid 4-1/2-inch tires, meanwhile, help the Ground Force run easily where it goes.