Bilstein 5100 Series Shock Absorbers are high gas pressure monotube shocks designed specifically for lifted pickups SUVs and Jeeps. The shocks feature a 46mm digressive piston with self-adjusting deflective disc valving. They offer super damping ability that makes them ideal for heavy hauling or occasional off-road use while maintaining an exceptional street ride. (zinc-plated steel body Triple-C-Technology coating)