Thank you! My local friend said that about an hour ago when I asked but it's good to have confirmation from another set of ears.The GS cage is the right cage for 1x, the SGS cage is for 2x and 3x.
The size of the cage has nothing to do with the biggest sprocket it can clear.
And the M8000 can clear sprockets up to 46 teeth. You have to put a chain in there and adjust the B-screw.
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