Ah I may be mistaken then, I thought for sure I had documentation of this but now I'm coming up empty. One thing to note though, in the mopar catalogue they refer to the parts as "rubicon steel bumpers" just like they refer to the "rubicon rock rails" and "rubicon hood" that are indeed standard. Add to this the fact that we've never seen a rubi without them, I'm gonna stay optimistic and think they will be standard after all.Where do you see steel bumbers as standard?
The JL order sheets show steel bumper group AST as E for extra cost for Rubicon. Not available for Sport.