2011-16 F250/F350 Superduty (2wd/4wd) & 2011-14 F450 (2wd/4wd) Alpha HD Rear Air Overload Kit 2011-2016 F-250 SUPER DUTY (2WD/4WD) Eliminate truck sag, sway and bottoming out with ALPHA HD air bags / air helper springs from Pacbrake, the only brand with inch-thick corrosion resistant end caps and 20 support wires for maximum strength and durability. Designed for durability and performance, the ALPHA HDTM Series offers a Better Built, Better Priced solution for heavy-duty applications Up to 5,000 lbs of load leveling capacity Perfect for DIY'ers, work trucks, construction trucks, landscapers, ambulances, ultility trucks and those towing or hauling boats, snowmobiles, ATV / UTV's and more KIT CONTENTS 2 air springs Corrosion resistant roll plates Precision laser cut powder coated steel brackets Grade 5 plated hardware All accessories required for the perfect bolt on install Comprehensive installation guide Pac Brake HP10387
