Quote:
Originally Posted by oldpotatoe
it's a shame they are making cranks that aren't compatible with earlier chainrings..when a 6800 or 9000 CR is gone, it's a shame to have to swap the crank to 'replace' a chainring.
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It is difficult to imagine a scenario where someone would replace just the crankset. Adding a power meter, maybe?
6800/9000 parts will be available for a long time. The new cranks are a clear improvement with chain line; well worth upgrading the derailleurs if you have shorter stays and don’t run a standard up front.