Originally Posted by
Iride01
Spacers for the cassette to the hub or spacers between the cogs? Yes the spacers for the spacing of the cassette to the hub might be the same depending exactly on what your free hub body length is, but the spacing between the cogs is unlikely to be the same between the various 9, 10 or 11. Shimano only shows the 11 speed being compatible with other 11 speed components. And likely the same for any others.
But I just did a hasty check on Shimano's tech doc site. I'd never heard of CUES before.
What is it that appeals to you about it? Are you wearing out your other cassettes?
I ride a tandem and it's pretty heavy on its drive train, the ability to interchange between different Cues parts IE run an 11speed rear derailleur with ten speed shifter on a 10speed system means that the spacing between cogs is the same with I presume a larger end spacer but without going out and buying the cassette I can't seem to find out what size the spacers are.