The Rock Krawler 4.5-inch front coil spring kit for 2021+ Jeep Wrangler JLU four-door (392) applications supplies the 4.5in front coil specification as a kit for the 392-listed model. This front coil spring kit is specified for JLU 4DR 392 applications and matches the listed 4.5-inch front coil requirement in the product description.
Rock Krawler 2021+ Jeep Wrangler JLU 4DR 4.5in Front Coil (392) Spring Kit