Check out this tutorial How to upgrade the rear shock
I took off the rear shock and took measurements:
Diameter outer: 1.75″
Diameter inner: 1.25″
Mounting width: 1″
Center of eyehole to center of other eyehole: 6″ (probably 150mm)
I found a little circular opening which was plugged with a metal pin or some type of metal filler when I peeled back the tape around the perimeter of the outer cylinder. There was a little divot at the end of the small end, but no other openings.
I also might have found a replacement support.