2018 Jeep Wrangler Body Structure in Extrication January 13, 2018 0 Body Structure Here is a quick look at the 2018 Jeep Wrangler body structure. One important note on the Jeep Wrangler, the integrated roll-bar, which is called the sport bar is constructed of ultra-high strength steel. 2018 Models Body Structure Extrication Vehicle Extrication 2018-01-13 Smitty