Changin sprockets on timing chain?

[euronatura]

1988 - 190e - 2.3L - 150K miles.

I am taking my car today to the shop to have the timing chain, guides and tensioner changed. I am taking the parts with me to the shop, but the shop also told me to take the sprockets to change. In reading all the threads associated with this I have not seen anything mentioned on this. Do the sprockets need to be changed also? Is this feasible?

thanks in advance.