This Rock Krawler kit box is specified for 2011–2016 Ford F250/F350 Super Duty applications and references the Super Duty 3.5in/4.0in AS configuration. Packaged as a component box, it contains the vehicle-specific parts for a Super Duty suspension kit sized to the 3.5-inch or 4.0-inch options and intended for 2011–2016 F250 and F350 models.
Rock Krawler 11-16 Ford F250/F350 Box Kit Super Duty 3.5in /4.0in AS