To install the front shocks, we raised the vehicle and secured it on jack stands so we could remove the front tires. On the rear, we didn't need to remove the tires. With the vehicle raised, unbolt and remove the old shocks. Stack one rounded washer and polyurethane bushing on the threaded portion of the piston rod. Insert the top part of the rod in the shock mount and install the second bushing, rounded washer and nut. The Rancho shock has a nut welded to the rod below the mount, so you can use a wrench to keep the rod from spinning as you tighten the upper nut.