Thank you all very much for your information! I have an "original" silencer, I think,....as it`s not marked and has been on the bike for a very long time. It`s not restrictive that I have noticed and I`m sure Stuart Metcalfe will back me up there as the bike went very well!! I say "went well", as due to a loose exhaust nut and therfore banging in the silencer on the over run the silencer was damaged and sounded like a tin of nails (my silly fault for not sorting it sooner). At the moment I have fitted a new old stock "cambells" silencer. The bracket is too thin but the main issue for me is the noise, it has a spiral baffle but its just not the same! With the original silencer fitted the bike sounded "lovely" and most people who listened to the bike tick over would say how very nice it sounded, my friend Bob Culver for one! Arrogant, yes, but I have heard lots of Vincents at recent rallys and not one sounded as sweet. I think I need to take the old silencer apart and find out it`s secret! Call me a "nut" if you like but I want the bike to sound like it was meant to. I`m not interested in fitting a straight through absorption type silencer, to me they make the bike sound rough and extra performance is not important. If I want to go fast I jump on my 140bhp 998s FE Ducati! and thats a bike that does sound great with absorption race cans! Thanks again for everybody`s input! This Forum is a great way to find suff out! Well done VOC! Paul