Wilwood Black Mustang Tandem Brake Master, 1964–1972 Manual, 15/16-inch Bore

The black e-coated version combines a high-volume tandem reservoir with the pushrod intended for the 1964–1972 Mustang manual brake pedal. Its side outlet choices assist line routing, while the fifteen-sixteenths-inch bore still requires a hydraulic-system match. Bill Wood established Wilwood Engineering in 1977. From Camarillo, California, Wilwood designs and manufactures disc brake systems and a component range covering master cylinders, rotors, calipers, fittings, valves and brake lines. Across its motorsport, specialized and street-performance applications, the correct choice depends on the complete brake system rather than one dimension alone.

Technical Details

• Manufacturer part number: 260-14157-BK
• Material: Aluminum
• Cylinder bore: 15/16"
• Pressure circuits: 2
• Stroke Length: 1.10 in
• Reservoir Type: Integral
• Fluid capacity: 8.0 / 4.8 oz
• Flange-to-end length: 8.15"
• Overall Length: 13.65"
• Mounting centers: 3.22–3.40"
• Pushrod dimensions: 5.75"
• Finish: Black E-coat
• Native pressure ports: 1/2-20 at both circuits; use the correct included outlet adapters and seal washers
• Circuit outlet adapters: Primary: 3/8-24 or 1/2-20 inverted flare; secondary: 3/8-24 or 9/16-18 inverted flare
• Hydraulic relationship: Equal pressure output from the two circuits before external proportioning; 2:1 primary/secondary volume relationship
• Service: Factory rebuild only; do not disassemble the tandem piston assembly

Fitment & Compatibility

Confirm the Mustang has the specified manual pedal and mounting geometry before installation. The primary and secondary chambers provide a 2:1 volume ratio, not a built-in 2:1 pressure ratio. Retain complete piston return, full travel and separate circuit plumbing; the adjustable combination valve is an optional separate assembly.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS969 instructions and specifications
• Wilwood FL162 instructions and specifications
• Wilwood DS487 instructions and specifications

For help choosing the correct service or conversion component, contact PMB Performance with the existing brake-system details. Our team has over 20 years of experience working through parts and fitment requirements.