Take your Jeep Cherokee XJ to the next level. If you think that your XJ looks equally good clean as it does covered in mud, sand, snow or off-road grime. You need to raise your ride height. Add bigger off-road tires for more ground clearance to conquer larger piles of fun. Skyjacker specifically engineered a progressive variable rate coil spring, distinctively a 2-stage dual rate long travel coil. Spring rate progression is from a first Flex Rate to a second Ride Rate. First Flex Rate stage delivers a comfortable ride with the ability to flex / expand during full articulation as the suspension drops (full droop). This keeps the coil springs seated in the upper coil mount / bucket and the tires in contact with the terrain. Second Ride Rate stage only engages after compression past Flex Rate. Shock dampeners key role is to optimize your suspension by keeping your tires in contact with the terrain. ADX 2.0 Adventure Series Remote Reservoir Aluminum Monotube Shocks deliver modern technology with an innovative off-road race-inspired full-displaced valving system. Engineered for higher speed applications, remote reservoir shocks still perform at crawl. The external remote reservoir separates nitrogen gas from the oil with an Internal Floating Piston (IFP). The majority of the reservoir contains pressurized nitrogen gas. The IFP prevents gas and oil from mixing or foaming (cavitation). Skyjacker Softride(R) Technology enhances every single aspect of the rear add-a-leaf spring performance. These individual leafs are shot-peened with hard steel pellets at very high velocities. Skyjacker's advanced method of shot-peening compresses the surface of the steel thereby increasing the tensile strength of the spring. Skyjacker's engineered processes achieve maximum wheel travel, ride quality and long-lasting life. Reap the benefits: On-Road Refinement and Off-Road Readiness.