Hey, GothamVengeance... you're referring to the Hand Wing stops... not bumpers.
Yeah, I looked at those and decided they probably wouldn't fit the F6B mirrors. You're right about the frame being too thick.
They were apparently designed to be mounted on the bottom of the Gold Wing mirror... which is upside-down on our F6B.
I left mine off. And I don't see them in the pics that the others have posted.