There are a very limited number of exhaust suppliers for the BA based in the UK. I don't think you'll find the TORs cheaper anywhere else, unless you can do a deal with your dealer. They do come up on ebay from time to time, so worth keeping an eye on that.
The other option is to consider drilling the baffles (some or all) out of your standard exhausts. Search this forum for info on how to do this. You may want to get hold of a spare set of standard exhausts as well, for MOT time. Again, ebay is the best place IME.
Many places will import exhausts if you ask them. Grzegorz (in the UK) on this forum has some Epcos. I believe he ordered them from the US.
Oh, and hi - maybe see you on one of the UK rides. Where do you live?
