Helper Spring Kit; Red Label; Air Spring; Frame Mount; Up To 7,500 Pound Load Capacity Per Set (Not To Exceed The Gross Vehicle Weight Of The Vehicle); Commercial Grade Rubber; With 2 Bellows/ Heavy Duty High Alloy Mounting Brackets/ Installation Hardware The Firestone RED Label™ Air Springs are built to extreme specifications found in the most demanding applications. We pioneered the Air Spring industry, and continue to develop the highest quality products that outperform anything else on the market. Type: Air Spring Load Capacity: 7500 Pound With Air Compressor: No Color: Black Quantity: Set Of 2 Pressure Range: 5 To 150 Pounds Per Square Inch Material: Rubber Mounting Type: Frame Mount With Bellows: Yes With Air Line: No With Roll Plate: No With Valve: No With Mounting Hardware: Yes Estimated Install Time (Hours): 1