A: A body lift is just what it says, it lifts the body of the Jeep off of the frame. They can be made of polyurethane, metal, and even fiberglass. They range in height from 1 inch up to 3 inches. It generally felt that anything over 1.5 inches is too high for a Jeep. Most will say no higher than 1 inch. Anything over 1.5 inches can cause binding problems with shifting linkage, length of wires, fuel line, A/C lines, and a large gap between frame and body. There is also somewhat of a safety issue if over 2 inches, the Jeep becomes somewhat top-heavy.