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Product details
This seven-eighths-inch Compact Tandem master combines an integral dual reservoir with the eyelet rod used by the specified classic Mustang manual pedal. Its black body is shorter from flange to nose than the oval high-volume design, making the housing envelope a distinct selection factor. Wilwood Engineering, the Camarillo, California disc brake manufacturer founded by Bill Wood in 1977, designs and builds systems for specialized, motorsport and street-performance applications. The product range covers brake lines, valves, fittings, calipers, master cylinders and rotors. A replacement component must preserve the intended relationship between the system's hydraulic and mechanical parts.
Technical Details
- Manufacturer part number: 260-15520-BK
- Material: Aluminum
- Cylinder bore: 7/8"
- Pressure circuits: 2
- Stroke Length: 1.10 in
- Reservoir Type: Integral tandem chambers, 7.8 and 4.7 oz
- Fluid capacity: 7.8 / 4.7 oz
- Flange-to-end length: 6.55"
- Overall Length: 12.32"
- 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
The exact master page specifies the 1964–1972 factory Mustang manual pedal, while the Ford-style flyer describes compatible 1960–1973 Ford pedal geometry. Match the actual pedal, eyelet and 3.22–3.40-inch mount rather than assuming every car in a year range is identical. Preserve complete 1.10-inch piston travel and separately plumbed circuits.
Manufacturer Documents
- Wilwood product specifications
- Wilwood DS1287 instructions and specifications
- Wilwood FL162 instructions and specifications
PMB Performance brings over 20 years of brake-system experience to component selection. Send the installed cylinder, pedal and connection details if you need help checking this configuration.
