Please double confirm the part number of your suspension to ensure you will get the right item!! Fits single rear wheel (SRW) and dual rear wheel (DRW) models. Fits ALL models without a fifth-wheel hitch. Fits most side mount fifth wheel hitch applications. Does not fit for cab & chassis applications. Minimum PSI: 5 PSI. Internal Jounce Bumper included: Yes. Placement on Vehicle: Rear left and right. Load capacity:Up to 5000 LBS. Design height: 180 mm. Package includes(as the picture shows). 2x Heavy Duty Double Bellow Air Ride Suspension bags. 6x Upper and lower mounting brackets. Includes All Brackets & Hardware Needed to Install. Stress Test Over 5,000,000 Times:Durable and Safe. Burst Pressure? 2.0MPa:High Compressive Strength and Less Noise. 24 Hours Air Tightness Test? 0.02MPa:100% Air Tightness Guarantee. Temperature Range? -40? /? 70? :Premium Natural Rubber Material. Use high-quality steel with high load-bearing capacity and long life. Excellent and practical bolt-on installation. Safe carrying capacity and stability. Restore the original ride height and improve ride quality. Ensure our driving comfort and reduce tire wear. Instruction is not included. Professional installation is recommended. Other items you might also like.