RS5000 high-performance shocks from Rancho are the world's best-selling high-performance light-truck shocks for a good reason: They provide exceptional performance and comfort on stock or raised vehicles. Their twin-tube, cellular-gas design and 10-stage valving deliver a comfortable highway ride and superb off-road performance, and their expanded-tube design provides more fluid capacity, for lower operating temperatures. They also have an internal rebound bumper and come standard with an all-weather, red convoluted boot to protect the piston rod. Note: This is a single shock absorber, please order in quantities appropriate for your application. For lifted applications only. 4" lift.