Roof Rack for a Helmet Top?

[FlameRed]

I did do quite a bit of searching and thought I would ask here since I may have over looked the obvious.

Is there a Roof Rack specifically designed to fit a Helmet Top?
Or should I just whip out the old tape measure and look for a Roof Rack that will dimensional fit the helmet top real estate? No doubt that will be be Chinesium

 

[KKroger]

There is but it is mcClairin composites... So probably high dollar or unobtainium.