The Rock Krawler 4-link upgrade package for 2017–2022 Ford F-250 and F-350 4x4 trucks supplies components to convert the rear suspension to a 4-link layout. This package-level description conveys that the parts are organized for those model years and four-wheel-drive variants, with component boxes and related hardware included for the upgrade.
Rock Krawler 2017-2022 Ford F250/F350 4x4 Package 4 Link Upgrade