Originally Posted by
Bill in VA
I am waiting for the 2X versions. I wonder how long the cage on the rear derailleur will be. At this rate, we may need larger rear wheels for the 9 inch cage...

my front chainrings are 39/56 and my cassette is 11-36 10sp, my Shimano XT Dyna Sys rear cage is apparently a medium and it copes fine with the full range.
10th and 11th gear are noisy, though.