2500 / 3500 2-Bag Rear
Adding a Kelderman Air Ride Conversion Kit to your existing suspension will provide a level of comfort you thought was impossible. This is particularly true when the truck is not loaded. By loosening the rear spring shackle from the frame and attaching it to the Air Ride you've effectively provided yourself with a two-stage suspension system that smoothes the road. The Kelderman Air Ride is not to be confused with just adding an Air Bag between the axle and the frame. This type of system is merely a helper for the springs to allow additional weight carrying capacity. It does nothing for the riding qualities of the vehicle and in many situations degrades the ride. You do not get additional load carrying capacity with the Kelderman Air Ride, nor do you sacrifice capacity. The only thing you gain is ride comfort. And isn't that exactly what you're after?

An upper frame is bolted to the pickup frame. A lower frame is attached to the upper frame at the rear hinge point. The spring shackles are attached to the lower frame and the Air Bags are mounted between the upper and lower frame units. It's really that simple to convert your truck to Air Ride Comfort.

All components are constructed of high quality materials for reliability and a long service life.

The two bag system utilizes two air bags, one on each side of the frame. It comes with a hitch receiver as standard equipment.

Typical air pressure when empty ranges from 25-35 psi, depending on what kind of bed you have and what is in the bed. When loaded, depending on the load, pressure could reach 100psi. The Firestone air bags are durable and are tested to peak at over 300psi without breaking!

To monitor how much air to run in the system, just take a look at the bottom swingarm of the air ride. You want to keep this swingarm parallet with the ground. This will allow your air ride to work as desinged, giving you the best ride.
2001 and up 2500/3500 short box 2-bag rear
  - KLD-GM01UP-1
Price: $1,499.99 Sale Price: $1,199.99     

FAQ's
Frequently Asked Questions

» Can I run the bags empty? It will not hurt the bags to run empty, but the ride will be very harsh. When the bags are empty, you probably will not be able to turn very sharp because the tires will rub on the lower rear part of the fenders.

» How tall can I run the bags? Running the bags completely topped out will not only yield a harsh ride, but typically put the pinion angles, driveline and alignment out of specs. It will ride harsh because there is no rebound if they are topped out. When the bags are all the way up, the front left tire will tend to be sticking out of the front fender well farther than the right front.

» Should the bottom of the bag be straight? Not being straight will not hurt the bags. Air bags are run in industrial applications up to 30 degrees. We try to keep the bags straight as possible, but the bottoms may be angled a little as the pinion angle of the axle is set. As far as up and down goes, the kits are designed for the bags to set pretty square. If your application has an adjustable panhard bar, use that to make sure the axle has the same amount sticking out from side to side. Once this is equal, the bags should be straight.

» Do the bags wear out? As long as the bags do not have anything rubbing on them, they should last for years. Periodically check your bags to make sure nothing is rubbing on them and no rocks or debris has lodged in between the air bags and steel framework. Be sure to thoroughly wash the bags after mudding. Blowing a bag should be no rarer than getting a flat tire.

» What should my bag's height be? Use the following chart to monitor your bags heights.

Bag Number Air Ride Height
8979 bag 6.5 inches 11-13 inches
5323 bag 4.5 inches 7-9 inches
9619 bag 10.5 inches 14-18 inches
5770 bag 4 inches 7-9 inches


» Do I need limiting straps? Unless you are planning on jumping your truck, limiting straps are not required. The only other time they would be helpful is if the truck is going to be lifted by a frame hoist/lift with the shocks removed.

» Can I blow up a bag? The bags are designed by Firestone to be operated at a maximum continuous pressure of 100 psi. The bags are also pressure tested to operate at over 300 pound spikes. With the air compressors that we use, it would be very difficult to blow up a bag.
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