Front Master Cylinders

Harley-Davidson front master cylinders are available for a broad range of motorcycle braking systems, from older XL, FL and FX models to later Touring, Softail, Dyna and other applications. The range includes complete Harley-Davidson front brake master cylinders, handlebar-mounted master cylinders, replacement assemblies, billet designs and model-specific units in different finishes. Bore sizes represented across the category include 5/8-inch, 9/16-inch, 11/16-inch, 3/4-inch and metric configurations, allowing the product range to cover different front brake system requirements and control setups.

The category also includes Harley-Davidson front master cylinder rebuild kits, pistons, cups, springs, gaskets, reservoir components and replacement covers for servicing existing assemblies. Master cylinder covers and lids are available in finishes and designs such as chrome, black, machined, finned, smooth, dimpled and custom-styled configurations. Products from V-Twin, Drag Specialties, Harddrive, Performance Machine, Joker Machine, Hawg Halters, GMA, Covingtons, Accutronix and other manufacturers provide options for Harley-Davidson brake master cylinder parts, replacement components and custom handlebar control configurations.

Proper fitment is important when selecting a Harley-Davidson front master cylinder because bore diameter, single- or dual-disc configuration, ABS compatibility, lever and handlebar setup, reservoir design and motorcycle model can affect compatibility. Some applications use complete master cylinder assemblies, while others can be serviced with a Harley-Davidson master cylinder rebuild kit, replacement gasket, piston component or reservoir cover. Matching the master cylinder to the existing front brake system helps maintain the appropriate hydraulic configuration while providing a suitable replacement or service component for the motorcycle.