Helper Spring Kit; Red Label; Air Spring; Frame Mount; Up To 7500 Pound Leveling Capacity; Adjustable from 5 to 150 PSI; Commercial Grade Rubber; With Air Springs/ Brackets/ Hardware; Air Compressor Sold Separately Firestone air spring systems are designed to maximize safe load carrying capacity, stability and overall ride quality. They are designed and assembled in the USA. Ride-Rite air springs use the same Firestone technology used on many heavy-duty trucks, trailers and buses on the road today. That means you'll get Firestone's reputation for commercial grade durability, quality, reliability and service. 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: No With Air Line: No With Roll Plate: No With Valve: No Remote Type: Not Applicable With Mounting Hardware: Yes Estimated Install Time (Hours): 1