Also, Shimano changed the design very slightly at some point. You won’t know until you find out the outer ring wobbles once you’ve tightened at as far as the ring will go.
On the later ones the back of the spider where the ”lockring” faces to the spider has about a 1mm flange (it’s actually material removed compared the those without a flange. Requires finding a suitable washing/spacer, which is fractionally larger internal diameter than a cassette spacer...
On the later ones the back of the spider where the ”lockring” faces to the spider has about a 1mm flange (it’s actually material removed compared the those without a flange. Requires finding a suitable washing/spacer, which is fractionally larger internal diameter than a cassette spacer...