When it comes to windshields, a good choice is the Slip Streamer Spitfire windshield. It just blocks the wind from your chest, is cheap, fits just about any motorcycle with round handlebars and can be removed in seconds as it is attached with small T-thumb screws to the bar mounts. I used one on my Zero and it seemed to cut power consumption by about 10% at speed, as well as blocking the wind from hitting my chest, while keeping my helmet in clear un-turbulent air, which I liked.