ApplicationCompatible for Chevrolet Silverado 2500 HD 2011-2019 compatible for Chevrolet Silverado 3500 HD 2011-2019 compatible for GMC Sierra 2500 HD 2011-2019 compatible for GMC Sierra 3500 HD 2011-2019 For single rear wheel (SRW) and dual rear wheel (DRW) model Fit most side mount fifth wheel hitch model Does not fit cab & chassis modelSpecificationCondition: Brand New Minimum PSI: 5 PSI Maximum PSI: 100PSI Internal Jounce Bumper included: Yes Placement on Vehicle: Rear left and right Air spring--- Load capacity：Up to 5000 LBS Design height: 180 mm Stroke:100 mm Max. Extended: 200 mm Min. Compressed: 100 mm Package includes（as the picture shows）: 2x Heavy Duty Double Bellow Air Ride Suspension bags 4x Upper and lower mounting brackets 2x Air line-stainless steel braided and Air line-nylon Includes All Brackets & Hardware Needed to InstallFeature1、Stress Test Over 5,000,000 Times：Durable and Safe 2、Burst Pressure≥2.0MPa：High Compressive Strength and Less Noise 3、100% Air Tightness Guarantee 4、Temperature Range ≥ -40℃/ ≤ 70℃ (≥ -40°F/≤ 158°F)：Premium Natural Rubber Material 5、 4-Layer reinforcement construction: Enhances air spring load support. 6、Use high-quality steel with high load-bearing capacity and long life. 7、Excellent and practical bolt-on installation. 8、Safe carrying capacity and stability 9、Restore the original ride height and improve ride quality 10、Ensure our driving comfort and reduce tire wear. 11、Dacromet is a new surface treatment technology that has excellent corrosion resistance compared to traditional electroplating processes. 12、Stainless steel braided air lines provide better protection against sharp edges and flying debris than nylon air lines. 13、The rolling plates are upgraded with a rust-proof stainless steel structure, making them strong and durable.