X-Factor, 4 Link Upgrade: 2011-2016 - F250/F350/F450

RK Suspension Super Duty 4 Link Upgrade is by far the strongest 4 link upgrade on the market for your F250/F350 or F450! The control arms are made from 2” solid alloy steel with ¼” thick laser cut steel and boxed 4 link mounting forks...