My base model 14 GT didn't come with one but I bought a new stock take off brace off of Ebay for $99 shipped. I can't tell a difference but I like the looks of it so it was worth it to me. I'm sure it doesn't hurt to have it.
2014 GT, Sterling Gray, base model, Automatic
GT500 AB, GT500 OTA pipes
Bob's oil catch can
Ford aluminum finned diff. cover
Ford all weather floor mats
Ford trunk liner and cargo net
Ford locking gas filler plug and wheel locks