Rancho RS5000X Gas Shock Set 2005-2016 Ford F250 Super Duty 4WD w/2.5-4" Lift Part Numbers RS55044 and RS55254 Set of 4 Shocks for vehicles w/2.5-4" front Lift and w/0-2.5" rear Lift; Incl. Rancho RS6511B or RS6514B Fits 4WD vehicles All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. Rancho's limited lifetime warranty protects against defects and premature failure. Rancho's 90 day ride guarantee covers RS5000X, RS7000MT, and RS9000XL shocks.