The AirBar clamshell is then assembled around the OEM leaf spring pad. This assembly provides the mounting points for the four-link bars, the lower shock mounts, and the lower air spring mounts. | 
The stock front spring mount is removed and the four-link bracket is bolted into its place. The link bars are adjustable, but come pre-assembled to the correct length so there's no need to set your pinion angle. Just bolt it in and go. | 
When installing the upper portion of the axle clamshell assembly, be sure to move the factory brake line for proper clearance. Typically, you will not need to remove this line; just pull it away from the axle so it is not crushed during assembly. |
The billet aluminum Panhard bar bracket is bolted to the rearend and optimizes the mounting point for the new lowered ride height. Be sure to use the supplied, longer-grade Grade 8 bolts to attach this bracket. A new L-tab is also provided to remount the brake line. | 
The other end of the adjustable Panhard is installed into the bracket that is part of the upper crossmember assembly. No welding, no fabrication, and no guesswork. (Note: A 2-inch bumpstop is included to prevent the rearend's center section from hitting the bed floor; an optional 1/2-inch bumpstop will allow another 1 1/2-inch of drop if the user wants to clearance the bed floor appropriately.) | 
The air springs and shocks can now be installed. Make sure to run the suspension through its entire travel to ensure there is no interference with any other components before continuing. |
Before installing the bed, you will need to clearance the bed floor braces to avoid interference with the C-notch assembly. The section to clear will start about 7 1/2 inches from the wheelwell and continue another 4 inches inboard. | 
Here is the entire rear AirBar suspension installed. No compromise in load capacity or tire clearance, but a definite upgrade in ride quality and performance handling. It's usually easiest to run single or dual tailpipes over the axle on the passenger side. | |