Jeep TJ/LJ Steering Box Skid Plate 97-06 Wrangler TJ/LJ TNT Customs. Your Jeep Wrangler TJ or LJ Unlimiteds steering box is an easy target for that coming rock or ledge so protect it with a TNT steering box skid. Constructed of 3/16 inch steel plate our steering box skid is CNC cut and formed for ultimate durability and fitment. TNT steering box skids ship with a black powdercoat finish.Features: