Bought it after I bought the Competition baffle for my Pro-Pipe. Very happy with the Pro-Pipe exhaust that I bought from Dennis Kirk. Wanted a little louder so I bought the competition baffle. It didn't say requires the end cap. Ordered end cap. It bolts to the baffle perfectly. The End Cap mounting holes do NOT line up with the existing holes in the muffler. I did not want the ruin the chrome plating on the muffler just to be able to mount the end cap and baffle so I returned it. I wish that Vance and Hines did a better job with fitment. FYI I have a 2007 1700 Warrior with Vance and Hines Pro-Pipe. Dennis Kirk has a great return policy and I have always been pleased with their customer service.