Drag Specialties offers a variety of OEM replacement or compatible Front Brake Master Cylinder Assemblies for your Harley-Davidson. These high quality front brake master cylinders include the lever and clamp half, are compatible with DOT 4 or 5 brake fluid, and are specific to your model. See Additional Information below for fitment. Include lever and clamp half Compatible with DOT 4 or 5 brake fluid Specifications:Disc: SingleBrake Master Cylinder Bore Diameter: 1/2"Clamping Diameter: 1" NOTE: Not for use with 1-1/4" or 1-1/2" handlebars that are not clearanced for master cylinder