The difference between a body lift is a body lift uses both blocks and spacers to lift the body of your vehicle higher without actually altering the suspension of the vehicle. COMPONENTS OF A 4X4 LIFT KIT There are many components within a 4×4 lift kit that makes it work. These components within a 4×4 lift kit can alter the way your 4wd drives by either making it more comfortable or increase your load bearing potential to help push heavier loads and even help perform on off-road terrains. Generally, all 4×4 lift kits comprises of: Shocks: The shocks within a 4×4 lift kit is one of the most important parts. It ensures that your vehicle is kept relatively comfortable and smooth. Many vehicles replace their shock absorbers with a higher pressure, high-temperature replacement for those who plan to pull heavy loads or go off-roading with their 4WD. Springs: The springs within your 4×4 lift kit work hand to hand with your shocks. Helping absorb energy that’s generated when driven over humps and bumps when going off-road. Typically, when you raise your vehicle, raised springs are required to ensure your safety. However, if you’re getting a load-based suspension done, then a much firmer and stronger heavy duty coil springs or leaf springs can be installed to provide additional support when towing heavy loads. Bushes: In almost all 4×4 lift kits, you’ll tend to find that there are a number of bushes that help separate the moving parts of your vehicle. To help reduce scrapping and scrubbing between them and help absorb shocks that would otherwise be directed to the more delicate parts of the vehicle. Shackles & Bolts: The shackles & bolts within a 4×4 lift kit comes in a vast variety of sizes to help tie together your suspension set up. These, shackles & bolts, including your U-bolts, are usually replaced when it’s necessary as part of the suspension to give it extra reinforcement and greater stability.