Been searching for months to find an alternative to the big, heavy ugly OEM can. And sorry to say, I don't like the Akra - on looks or price. Have found very few makers who do a slip-on for the XR. The only one I liked was the Cobra / Raptor and finally Pipewerx.com decided to make one to fit. There are one or two others, but they didn't appeal. Nearly bought the Cobra, then my son found BOS and for my taste it fits the bill. Compared with the OEM it's smaller, much lighter, beautifully engineered, shorter, slightly conical rather than same dia and carbonised!! No removable baffles, but it makes a richer and slightly deeper sound - and it pops nicely on the down-shift. I think it suits the scale of the bike too!! See for yourself.