The impact on range is negligible. In my case I added a GIVI air flow 2 from a BMW GS with some custom brackets, what I like about my setup is that I can slide or remove the windshield depending on the type or riding that I am doing.Thank you, @BlueStudios for the comprehensive response about you windshield! Like @tcypher, I'm also interested in the impact of the windshield on range. I suspect the range would improve, but would like to see the improvement numbers. If nothing else, not having your jacket act like a parachute has got to help. Thanks again!