Pro Comp USA has been manufacturing high quality, durable products for on and off road enthusiasts including tires, wheels, suspensions, shocks, and more. Pro Comp USA chooses to focus on suspensions, wheels, and tires for a simple, effective, and affordable shopping experience. Featuring a no hassle, user friendly approach to finding the right parts for your vehicle, Pro Comp USA sticks to the basics to deliver what you need as quickly and affordably as possible. Pro Comp`s Lift Block Kits feature tapered lift blocks to improve and retain vehicles driveshaft angles. The block kit is what you need to achieve rear lift on your leaf spring equipped vehicle.