[911]

Do I have to replace the sprockets with the chain or does that needs only to be changed when there is a problem ?

[darklord]

Yes. It’s likely that the sprockets are worn, and a new chain will make the wear out of the socket faster than expected so its recommended to change it.

[mark]

Yes. you can change the socket with the chain. So that your chain may come for long life and so for the socket also.