Improves Ride Quality - Perfect for both on and off-road conditions, these shocks will improve handling and ride quality by providing you with a smooth, comfortable ride as they instantly react to changing surface conditions and ensure a consistent, fade-free ride performance. They feature a 46mm monotube design, patented digressive valving, durable vulcanized neoprene rubber bushings, and zinc plating for resistance against harsh elements. Perfect for Lifted Vehicles - Due to their larger tires and height, lifted vehicles place extra demands on a shock's damping ability. These shock absorbers are manufactured with a monotube design and patented digressive valving that will solve the problem for you. Whether you are driving on or off-road or your truck is loaded or unloaded, these shocks instantly react to the changing road to maintain a stable, controlled, and comfortable ride. Built to Fit Vehicle - One size does not fit all. These Bilstein 5100 shocks are valved and tuned