I don't see the benefit of a windshield vent on a spyder. It may work on other motorcycles. On the spyder the way the air comes up off the frunk lid under the windshield it just pushes the vented air up the back side of the windshield. I don't get any air on me doesn't matter how fast you go. The faster you go the harder pushes the air up the window. (Obviously)If you're going slow it doesn't push any through. If you put your hand there it's not hard to see exactly where the air is flowing. Waste of money in my opinion plus it's a real pain in the neck to clean around!