The Rock Krawler JT box kit entry for 2019 and newer Jeep Wrangler JT labeled 4.5in XF COMP designates a 4.5-inch X Factor competition-style component set for JT applications. These components are intended for use on 2019+ JT Wranglers and correspond to the XF COMP kit configuration, supplying the kit parts matched to that model-year fitment.
Rock Krawler 2019+ Jeep Wrangler JT Box Kit JT 4.5in XF COMP