Manufactured by Air lift - Part Number AIR:57541, 2020-22 Silverado/Sierra 2500/3500 AirLift LoadLifter 7500XL Air Spring Kit, , LoadLifter 7500 XL air springs are designed to fit select One Ton pickup trucks. LoadLifter 7500 XL air springs provide up to 7500 pounds of leveling capacity for support of your heaviest loads. More Leveling Power - With Less Pressure. The available volume in our huge 7-inch double-bellows air springs give you greater leveling strength at lower pressures. It's the perfect balance of lift and ride. Kit includes 2 air springs All necessary mounting brackets All of the hardware needed for installation Fully-illustrated installation guide Product information updated on 2022-03-04