KYB 565106 MonoMax Gas Shock Maximum performance upgrade with up to 40% more damping performance than standard shock absorbers Perfect solution when you need to upgrade suspension performance on your Jeep Grand Cherokee Truck monotube design outperforms all other standard shock absorbers Zinc-coated, stainless steel piston ring provides a positive seal in the most extreme conditions Rubber boot to protect the shaft and keep dirt and debris away from the seals