HP10033 ALPHA HD Rear Air Suspension For Dodge, Ford, GM Sleeve Style Air SpringEliminate truck sag, sway and bottoming out with ALPHA HD air bags air helper springs from Pacbrake, the only brand with inch thick corrision resistant end caps and 20 support wires for maximum stregth and durability. Don't risk the air leaks and temperature change fractures more common in the plastic end caps of the other guys. Insist on Pacbrake quality, durability and value. Have you ever noticed a difference in ride control when driving empty vs.