Mivv GP Carbon on mine. I love it. Very good quality and great sound. http://www.ebay.co.uk/itm/YAMAHA-FZS-1000-FAZER-2004-04-EXHAUST-MIVV-GP-CARBON-/361423507183?hash=item5426850eef:g:f4cAAOSwwbdWOz1P
Yes, I think they are - we got them from the dealer we bought the bike from as the "official" fairing lowers (I think they were made in France). I think I still some info on them and if I can find it I'll scan and post it.Overall, the lowers are great, keep feet warm and dry and seem of great quality, with a perfect colour match.
Btw, not heard them called silencers for a long, long time.
Strange.The two other guys on this thread with mivv cans look like theirs fit in exactly the same way (with the same clamp), but the logo is in a different place on their cans.