We make our own mounts.
Unfortunately though, the largest square tubing HD had was about 1/4" smaller than I needed. I thought I'd be OK with the flex in the other two mounts (which are still rubber)
The other part of the mount is cast aluminium.
I don't like cast aluminium. It does things like this:
when stressed.
doh!
One day I'll have a better welder than my flux core.
