That's interesting! Post a link or picture if you get the chance. Sounds like a...fender brace.
I'm going to try a ZL900 steel fender on my Phaedrus project, (K2 "custom") its fairly substantial but short. I think Kaw may have used it to double as a fork brace on the ZL. It's for an 18" wheel, and I have downsized the wheel on my project.
I'll also use a custom made tweak bar right under the triple clamps. I'll be posting a pic of it this weekend.