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Product details
This black left-front GP310 is a four-piston component for the supported 2000–2007 Harley-Davidson front-brake mounting format. Its 2.72-inch centers and metric inlet separate it from the earlier model. The 1.25-inch stainless pistons supply a published 2.46-square-inch piston area. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. Its disc brake systems and components serve motorsport, street-performance and specialized applications. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are among its products, selected according to the complete brake system’s requirements.
Technical Details
- Manufacturer part number: 120-7739-BK
- Caliper type: GP310 Motorcycle Front (2000-2007)
- Construction: Billet Aluminium
- Finish: Black Powder Coat
- Piston bores: 1.25 / 1.25 inches
- Piston type: Stainless
- Piston count: 4
- Published piston area: 2.46 square inches
- Dust boots: No
- Nominal rotor width: 0.25 inch
- Rotor thickness limits: 0.18–0.25 inches
- Rotor diameter limits: 11.00–11.50 inches
- Mounting style: Lug
- Mounting side: Left Hand
- Mounting centers: 2.72 inches
- Mount height: 2.18 inch
- Hydraulic inlet thread: M10 x 1.50
- Required pad shape: 6208
- Published pad area: 3.65 square inches
- Published pad volume: 0.63 cubic inches
- Manufacturer-listed component weight: 2.0 lb
- Supplied brake components: Individual GP310 caliper with brake pads
Fitment & Compatibility
Identify the installed fork and brake rotor before matching this left-hand caliper. Apply the Springer and four-speed FL exclusions and compare the full mounting drawing, not the year alone. Confirm rotor thickness, pad alignment and hose clearance, then verify the wheel envelope and appropriate brake fluid for the complete system.
For help identifying the correct brake component, provide the caliper markings and installation dimensions. PMB Performance has over 20 years of experience with parts and brake-system details.
Brake-pad warning: Cancer and Reproductive Harm. www.P65Warnings.ca.gov. This warning applies to the brake pads.
