Nigelnaturist
Guru
- Location
- Pontefract
Unless you wear them out.Yes, unless you've left it too long and then the new chain will slip on the old cassette and it would need replaced then, you very rarely have to replace the chain rings though.

Unless you wear them out.Yes, unless you've left it too long and then the new chain will slip on the old cassette and it would need replaced then, you very rarely have to replace the chain rings though.
Indeed, Im about to replace my 52t and probably should have earlier, at least I got in the region of 29,000 out of it.Unless you wear them out.mine have done maybe 10,000 miles and the middle is defiantly looking worse for wear.
My chainset is not a particularly high end, and its still good for a good while yet its just you can see the wear, and I think nearly 7,000 miles is not bad for KMZ 8sp chain, the cassette on the whole isn't worn just mainly the 19th cog, which is the one most used, my avg gear" being 63" the cassette has done the same distance.Chains should not behave this way - which should tell you that something's wrong with your maintenance regime or your sprockets/chainrings or the way you change gear.