100% bolt-on installation. Increased ground clearance. Levels the front with the rear of the vehicle. Includes heavy-duty radius arms equipped with durable durable rubber Bushings for maximum vibration absorption. New radius arms help maintain factory angles. Includes adjustable alignment cam at the axle to allow caster adjustment. Fabricated blocks are stronger and offer a longer lifespan than cast blocks. Specially designed anti-axle wrap rear blocks maintain stock ride quality while eliminating common lift block problem.