Rancho Quicklift Leveling Strut + RS9000XL Adj Shock Set fits 05-16 Frontier Part Numbers RS999311 and RS999922 Front Pair of Struts & Springs + Rear pair of 2 shocks for vehicles at factory height or w/0-2" front Lift and w/0" rear Lift Fits 2WD & 4WD vehicles Front height not adjustable from specified height. 9 settings of compression and dampening adjustment. Rancho's limited lifetime warranty protects against defects and premature failure. Rancho's 90 day ride guarantee covers RS5000X, RS7000MT, and RS9000XL shocks.