Heavy-duty blocks provide a fast and easy way to lift or level the rear of your leaf-spring-equipped vehicle. Looking for a quick and easy way to bring up the rear of your truck or SUV? Pro Comp lift blocks are the easiest way to lift or level the rear of your vehicle. Pro Comp rear lift blocks are available from 1.5" - 5.5" lift depending on your vehicle. See the cart below for your specific truck or SUV.