Rancho RS9000XL Adj Shock Set 2005-2016 Ford F250 Super Duty 4WD w/2.5-3.5" Lift Part Numbers RS999043 and RS999254 Set of 4 Shocks for vehicles w/2.5-3.5" front Lift and w/2.5-3.5" rear Lift; Incl. RS6510B or RS6515B or RS6525B Systems 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.