Rancho Quicklift leveling Struts + Rear RS5000 Shocks Kit - 05-15 Toyota Tacoma Front Pair of Struts & Springs + Rear Pair of Shocks Front height not adjustable from specified height. 9 settings of compression and dampening adjustment. Shock boots included with RS5000 shocks. Hydraulic damping and velocity-sensitive valving generate a damping force proportional to the velocity of compression or extension of the shock. Slow compression provides low resistance fast compression provides greater resistance. 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 limited lifetime warranty protects against defects and premature failure. RS9000XL series shocks include a 90-day ride guarantee.