If big isn't big enough for your 2011 Ford Super Duty, then Pro Comp's new 6-inch suspension systems just might your Super Duty the biggest and most aggressive stance on the block. Pro Comp's system features laser cut brackets and a drop pitman arm to maintain proper suspension and steering control without sacrificing overall ride quality. Stage I systems feature radius-arm drop-down brackets to maintain factory ride quality. Stage II systems include replacement radius arms constructed from 4130 chromoly tubing and 3/16-inch-thick steel plate for added performance. Stage 1 & 2 systems are available with several shocks options including Fox Resi, Fox Non-Resi, MX6R adjustable reservoir, MX6 adjustable or ES9000.