You want the best of both worlds for your heavy duty Ram......the ability to tow a load as the truck was intended, but also get dirty off road on the weekend. This system allows full axle articulation when aired out. You can now tow and haul more, ride level at any weight range and still go play in the dirt. Simply air up for hauling / towing and drop the air when you want off road performance. We combine a rolling sleeve bag and tapered piston design to provide 2,000lbs. of payload capacity per bag at 100psi max working load. These bags are offered for both 1″-2″ rear lifts and 4″ Rear lift configurations (adds the listed spacer to the bag system) to suit our 3″ and 6″ front suspension systems. Combining off road performance while increasing the load capacity and towing capability of your truck, with quality construction always in mind, built out of 1/4 inch plate steel. The newly designed lower bracket simply installs with a U-bolt instead of the old style fabricated straps that required welding.