Wonder if that can be fitted to our U.S. rear cargo racks?
Might be nice to have a "higher" and what may be easier to get to, lockable helmet holder.
I'm thinking it may hold the helmet more out to the side as well, instead of upside down on the aux tank helmet holder.

How is the bracket mounted to the rear cargo rack? Screws or bolts?

Bernard, can the Honda dealer you buy from, tell you what the parts would cost?
No rush...

Paved roads, just more needless government spending...

I pick up my mail in Santa Barbara, California, USA.