Eliminate truck sag; sway and bottoming out with ALPHA HD;air bags / air helper springs from Pacbrake; the only brand with inch-thick corrision resistant end caps and 20 support wires for maximum stregth and durability. Don't risk the air leaks and temperature change fractures more common in the plastic end caps of the other guys.;Insist on Pacbrake quality; durability and value. ALPHA HD;Rear Air Spring / Air Suspension Kit compatible with Ford F-150 4WD 2015-2021. Have you ever noticed a difference in ride control when driving empty vs. driving fully loaded? Your truck's factory suspension was designed as a compromise between capability and comfort. When hauling heavy loads; the rear springs can be pushed to the limit - resulting in excessive bounce; sagging ride height; and an overall feeling of instability. With the simple addition of a Pacbrake Air Spring / Air Suspension Kit ; you can distribute weight evenly to your tires; supporting any load without overtaxing your existing system. Pacbrake Heavy Duty Double Convoluted Air Spring / Air Suspension Kits are the only air springs (or air helper springs) on the market with one piece aluminum end caps and 20 support wires giving you maximum strength and durability! Each Pacbrake Double Convoluted Air Spring / Air Suspension Kit is equipped with corrosion resistant roll plates; precision laser cut powder coated steel brackets; grade 5 plated hardware; airline and all accessories required for the perfect bolt on install.; Pacbrake Air Springs come with a Lifetime Warranty.
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