Product Details This leveling unit does not come with installation instructions but is completely bolt-on; please consult a professional if you need support. Should take 2-4 hours to install and does not require any additional shock absorbers, cutting, welding, or other forms of modification. Made from Heat Treated Carbon Steel, machined to exact specifications for optimal durability and fitment. Designed to be solid so that it does not bend or warp under stress and should last the lifetime of your vehicle. .