The Rock Krawler X Factor Pro 3.5-inch suspension system with billet aluminum arms for 2011–2016 Ford F-250 and F-350 4x4 trucks pairs a 3.5-inch system with upgraded billet control arms. The product copy focuses on the kit as a matched suspension package for those model years, with component boxes and hardware supplied for proper installation.
Rock Krawler 11-16 Ford F250/F350 4x4 3.5in X Factor Pro System w/ Billet Aluminum Arms