For the front suspension, Air Ride Technologies supplies upper and lower control arms and a pair of Shockwave airbags with a built-in HAL shock absorber and braided air line and fittings for air supply into the front 'bags. Not pictured here but included in the kit are ball joint adapters to move the front spindles up 3 inches and new bolt-on steering arms to correct the angle of the tie rod and eliminate bumpsteer. Shown in this photo are new torsion bars, which Air Ride Technologies supplied for the story. The new torsion bars are not included with the kit, but a GM part number is included in the instructions, so they may be obtained before you begin the install. The softer torsion bars are used to carry the weight of the front end, while the Shockwave delivers the smooth, feather-like ride.
2001 Chevy Silverado 3500 Air Suspension Install - Hammer Time