48 tooth rear sprocket ned to change chain ?
 

My 600f4i has 15,000 kms on it. No perceptible wear in the chain or sprockets. Do I need to change the whole set( chain, /front and rear sprockets? Or could I get away with just changing the rear sprocket, understanding that I might need to change the whole lot a bit earlier?
Knoffie :icon_wub:

You can just change one part but remember that they do wear as a set. This being said you may get premature failure on the new part.

change to 48 tooth sprocket only
 

Thanks Scott for the advise. I think you are right and have decided to wait until they all need replacing as a unit.
Many thanks

Paul