The Rock Krawler X Factor 4.0-inch suspension system for 2011–2016 Ford F-250 and F-350 4x4 trucks presents a kit of components sized for a 4.0-inch lift. The product copy highlights that the system is sold as a coordinated package with component boxes and the hardware needed to install the suspension on those model years and drivetrains.
Rock Krawler 11-16 Ford F250/F350 4x4 4.0in X Factor Suspension System