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Usually you need to replace the cassette and chain.
Chainring tend not to be necessary unless it's obviously worn out.
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If the teeth of the chainring look very sharp, then that's a sign it may need changing.
If it look rounded, you don't need to change it;
Small ring don't need changing if you rarely use it.
edscoble
@se1derful
Hello all, I need to replace the big chainring on my venerable 2010 Allez Comp , and I was wondering if it's a case of just getting the latest, up to date 105 ring and chain?
Like these:
http://www.chainreactioncycles.com/shimano-105-fc5750-10-speed-compact-chainrings
http://www.chainreactioncycles.com/shimano-105-5701-10-speed-chain/rp-prod50457
Do I need to think about replacing the cassette/jockey wheels/small ring?
Thanks for any help.