M&P accessories actually sent me the C&S I think they had 'JP' stamped on them. Sadly, the rear was a 39T when the standard for a 900 is 37T.
However, I bought my 41T via a guy privately on E-bay which I think is actually for a 600ss - could be wrong.
I had to move the wheel all the way forward to accomadate the 41T and the standard Gold DID 520 chain (damn - I counted the links as well....47???? cant remember)
I'm told that steel sprockets are the ones to go for over Aluminium every time as steel is much harder wearing - and if you can afford it - they can be made harder still with anodising, but I dont have any experience of this (but you can get a sproket in a nice colour then
).
Links:
M & P Accessories Also told that Renthal & Afam are good:
B and C Express also:
www.powerlinks.co.uk www.biketorqueracing.co.uk Good Luck - Frank