If the Ti Force 4 into 1 pipe has a billet hanger on the right side, it is a Sumo pipe. The Sumo pipe was their "big tube" header version, and it came up higher on the right side, closer to the tail. Close enough so that it could not be attached to the passenger peg mount. On the other hand, if your Ti Force attaches to the stock passenger mount, you have the original, regular version. Both are better than anything out there today, IMHO.