Pro Comp MX-6R Adjustable Shocks Front/Rear 1999-04 FORD F-250/350 4WD 6.5" Lift Set of 4 Shocks - Fits 4WD Vehicles w/6.5" Lift Shock boots included with all shocks. Adjustable monotube gas design, with 6 settings of compression or damping adjustment. Reservoir keeps oil at optimal operating temperature. All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. Pro Comp's limited lifetime warranty protects against defects and premature failure.