unfortunately though, that won't pass an MOT. Anything with "not road legal" written on it is, well, not road legal... Also, if the police spot it, they won't be happy. I think its a rather large fine and I believe police in wales are hot on that sort of thing, or at least used to be, so don't take a biking holiday there Other companies include Two brothers SP exhausts (had one on the bandit, it was awesome akrapovic (I have one on this bike, mainly for the looks, but sounds decent too yoshimura Toce - an american company, but if you are after loud, I think these are pretty much straight through pipes, with an added baffle if you want one. They are meant to replicate the sound thunder from the reviews Ive heard Any of the above and you cant go wrong