Full Akrapovic Added

[Grumpy Goat]

... my experience with the California Scientific XL screen and the installation of a large touring screen on my brother's Kawasaki Concours produced somewhat similar results. Before we replaced the stock, worn front springs on the Kawi, you could see the effects of the "barn door" screen. Actually compressing the forks 1.5" riding into a headwind!

Wow ... never thought of that but it makes a lot of sense. The large "airfoil" in front with an acute angle of attack sloping backwards would cause significant downforce but to deflect the suspension 1.5" ... wow. And that is after the natural tendency of the front to lift with increasing speed!

Naturally that significant downward component would also have a significant horizontal component rearward, opposing the forward travel of the bike hence slowing it down.

I should put my Givi touring screen on the market ... chances are I will never use it. Buffeting and slowing the bike down significantly is a lose-lose situation.