Skyjacker Nitro Shocks Front+Rear 84-01 Cherokee XJ 4WD, 2WD 6-8 in Lift Set of 4 Shocks - Fits 2WD & 4WD Vehicles w/6-8" Lift Shock boots included with all shocks. Twin tube nitrogen gas charged design, with multi-stage velocity-sensitive valving All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. SkyJacker's limited lifetime warranty protects against defects and premature failure.