Easy Return Quick, Simple. Guaranteed Fitment Always the correct part. Note: Fits commercial cab and chassis only. 1? 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. 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. Minimum PSI: 5 PSI. Internal Jounce Bumper included: Yes. Placement on Vehicle: Rear left and right. Load capacity: Up to 5000 LBS. Package Includes(as the picture shows). 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. 1st at 4:30am. 1st at 5:00am. 2nd at 5:00am. Other items you might also like.