Require 8 Between Tire and Frame. Does NOT fit vehicles which have a 5th wheel hitch. 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. Minimum PSI: 5 PSI. Internal Jounce Bumper included: Yes. Placement on Vehicle: Rear left and right. Package Length, width and height: 643118 mm. Package Wight: 17.08 Kg. Load capacity:Up to 5000 LBS. Design height: 180 mm. 2x Heavy Duty Double Bellow Air Ride Suspension bags. 4x Upper and lower mounting brackets. Includes All Brackets & Hardware Needed to Install. We Recommend Professional Installation. Other items you might also like. Rear 4 Drop Shackle Hanger For Dodge Ram Charger D100 D150 All Cabs 72-1993.