A few weeks ago I bought a set of fork tube light mounts "Denali" .
They are for Inverted Forks.
The inch measurement was 2.05" for our forks , the mounts will work on 2 to 2 3/8 inch forks 50 to 60 mm diameter.
The extra room let me put some tape in between the fork and the mounts.
I thought I would pass the info on.