Can't comment on now, but Fuel was an english company that used to make custom exhausts, and very good ones at that, if I remember right that's all they make, but for anything, tractors, cars, bikes, generators that sort of thing.
the quality used to be above that of art/CCC/ blue flame, but a little below renegade and such like, the price seems good as well.
I'd have one, if I didn't have such a stunning pipe already
Cheers Mark.