I got the Revolution, but it must be the newer version, as it is much lighter than the stock exhaust. This version did not come with baffles and you cannot put baffles in. But it's all right, I'm satisfied with the sound and loudness of the exhaust. There is even a newer version which comes with baffles, which are remevovable from what I understand. But, I'm very happy that I was able to get a great deal on a slightly used one, and very happy about the quality and craftmanship of the pipes. It fits perfect, no hassles getting it on. And I really like the idea that I have a pipe that not too many FZ6's has on, makes it unique.