Up for sale is a Fifteen52 carbon fiber spoiler extension for the Fiesta ST. I ordered this for a project but ended up not being the look I was going for. It was mounted to a wing for a test fit and then removed - on my car for a week at the most. This, the dry carbon fiber version of the spoiler extension retails for $550.
I've included several pictures of this type of extension mounted on Fiesta STs as well as pictures of the one I have as it is right now sitting on my parts shelf.
Picture #5 shows the small knick in the gel coat from shipping.
I am local to Frederick Maryland if you would like to pick up in person - but I will ship to the continental United States as well.