7 feet of up OR down motion on each tire. Seven feet. Full specs can be found on YouTube. They include a fuel injected Ford 5.0L V8, c4 transmission and t-case out of an early bronco, ARB air locker running chain gears on the ends. Swing arms are hydraulically controlled, and can be controlled individually or together. In addition there is coil spring and shock suspension. Chains inside the swing arms turn Hummer gear reduction hubs at each wheel. 39.5 inch tires. Steering is linked through the swing arms. Body construction is steel tubing. Total weight is 5900 pounds. Check the video below.