I do not know about the new Ultra limited, but I know the CVO bikes in the past had the CAT in the header pipes, while all others (except California) had them in the mufflers. I know the Limited is not a CVO, but it is a 103". If the Limited has them in the headers, I would recommend changing all, if not slip on pipes are the best for price as well as performance from what I have read here. I have slip on pipes on my 09 Ultra and am very happy. Let us know what you find out.