Bilstein 5100 Monotube Gas Shock Set 2000-2005 Ford Excursion 4WD w/4-6" Lift Set of 4 Shocks - Fits 4WD Vehicles 4-6" Rear Lift Shock boots included with all shocks except in cases of special fitment. Monotube gas charged for longevity, durability, and performance. All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. Bilstein's Limited Lifetime manufacturer's Warranty protects against defects and premature failure.