Rancho RS9000XL Adj Shock Rear Pair fits 2005-2014 Nissan Frontier Part Number RS999311 Rear pair of 2 shocks for vehicles at factory height or w/0" rear Lift Fits 2WD & 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.