Rancho RS5000X Gas Shocks Set 2005-2016 Ford F-350 Super Duty 4WD w/2.5-3.5" Lift Part Numbers RS55043 and RS55254 Set of 4 Shocks for vehicles w/2.5-3.5" front Lift and w/0-2.5" rear Lift; Incl. Rancho RS6525B, RS6510 or RS6515 System; Excl. Chassis Cab 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.