The Firestone 2071 Ride-Rite Air Helper Spring Kit is designed to maximize safe load carrying capacity, stability, and overall ride quality. It utilizes a pair of convoluted air springs, which can be adjusted for changing loads. They are capable of 5, 000 lbs. of load-leveling capacity and enhance your ride by reducing inter-leaf friction.• Levels off-center loads• Inflation valves allow side to side adjustment• Keeps leaf springs from permanent sagging under repeated or constant load• Reduces the chance of bottoming out• Increases vehicle stability encouraging steady, safe driving• Installs between the frame of your vehicle and the suspension• Provides load support through the use of air pressure• Maximizes vehicle load-carrying capacity• Fits various older Chevy/Dodge/GMC/Ford models• 8" minimum tire to frame clearance• Load Capacity: 5000 lbs.• Pressure Range: 5 to 100 PSI• All hardware is included for quick, easy installation• Weight: 42.4 lbs. NOTE: Do not exceed your vehicle gross vehicle weight rating. Fitment1975-1986 Chevrolet C101973-1974 Chevrolet C10 Pickup1975-1986 Chevrolet C201975-1986 Chevrolet C301967-1974 Chevrolet C30 Pickup1987-1987 Chevrolet R101987-1987 Chevrolet R201987-1987 Chevrolet R301975-1979 Dodge D1001986-1989 Dodge D1001969-1974 Dodge D100 Pickup1977-1993 Dodge D1501975-1980 Dodge D2001969-1974 Dodge D200 Pickup1981-1993 Dodge D2501975-1980 Dodge D3001969-1974 Dodge D300 Pickup1981-1993 Dodge D3501994-2001 Dodge Ram 15001994-2002 Dodge Ram 25001994-2002 Dodge Ram 35001975-1977 Dodge W1001986-1989 Dodge W1001969-1974 Dodge W100 Pickup1977-1993 Dodge W1501975-1980 Dodge W2001969-1974 Dodge W200 Pickup1981-1993 Dodge W2501975-1980 Dodge W3001969-1974 Dodge W300 Pickup1981-1993 Dodge W3501990-1996 Ford Bronco1975-1979 Ford F-1001975-1996 Ford F-1501969-1996 Ford F-2501998-1998 Ford F-2501997-1997 Ford F-250 HD1969-1997 Ford F-3501975-1978 GMC C151973-1974 GMC C15/C1500 Pickup1979-1986 GMC C15001975-1978 GMC C251979-1984 GMC C25001986-1986 GMC C25001975-1978 GMC C351967-1974 GMC C35/C3500 Pickup1979-1986 GMC C35001987-1987 GMC R1500 Capable of 5, 000 lbs. of load-leveling capacity Keeps leaf springs from permanent sagging under repeated or constant load Installs between the frame of your vehicle & the suspension | Firestone 2071 Ride-Rite Rear Axle Air Helper Spring Kit, Older Chevy/Dodge/GMC/Ford