REAR AIR SPRING KIT 13-26 RAM 3500FIRESTONE REAR AIR HELPER SPRINGS ; 13 26 RAM 3500 4WD (EXCLUDING CAB AND CHASSIS AND FACTORY AIR ASSIST) Assembled In The Usa No Drill Installation This Kit Uses Existing Holes In The Frame To Mount The Upper And Lower Brackets. Modification Of The Frame Or Factory Suspension Is Required. Installing This Kit Does Not Void The Factory Warranty Compatible With In Bed Hitches Rated Up To 5,000 Lbs. Of Carry Capacity Manual Fill Compressor Not Included 5