All windshield measurements are based on this system. Sizes vary by model to afford a customized specific fit with proper clearances.
Each SwitchBlade Windshield and Mount Kit is model-specific. These are not “universal” fitments that work fine on some models and work poorly on others. When you order the Mount Kit and any SwitchBlade Windshield for your model bike, you can be sure it will fit like it was custom made for your motorcycle – because it was!