Here's a photo of the AST height adjuster. AST recently changed their adjusters from fitting 2.5" ID to fitting 60mm ID, and this one is 60mm. Since I use 2.5" ID springs, I use an adapter, which I got from Vorshlag. There's also the Swift bearing there in the picture, underneath the adapter.
Min height 0.75"
Max height 2.6"
Height of tube, interference height, 2.875"
Weight 353 g
In the following photo the 60mm-to-2.5-inch adapter is off, and you can see the Swift nylon bearing and race on top.
