I had the same thing done to some cassettes to fit my old 10sp Zipp 808’s See here https://www.lfgss.com/comments/16527039/
I had them done by Bomber bike works, they charge £30 for it. To fit back to an 11sp hub you just need a 1.8mm spacer which is quite easy to get hold of. https://www.bomberbikeworks.co.uk/engineering-services/
GLWS!
How easy was posting it there etc? Or are you local to Bristol?
@ghettro started
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I had the same thing done to some cassettes to fit my old 10sp Zipp 808’s
See here
https://www.lfgss.com/comments/16527039/
I had them done by Bomber bike works, they charge £30 for it. To fit back to an 11sp hub you just need a 1.8mm spacer which is quite easy to get hold of.
https://www.bomberbikeworks.co.uk/engineering-services/
GLWS!