Originally Posted by
Sanman023
So you're saying that the lockring that came standard with the Dura Ace 7800 11-23 cassette doesn't work? That would suck.
No, cassettes starting with an 11 cog require a special smaller diameter lockring. In the past with some brands this smaller lockring has been sold separately. The lockring that came with you cassette should work with that cassette.
All other cassettes within a brand use the same lockring.