Wilwood Black 1-1/8-inch Compact Master with Ford Mustang Manual-Pedal Eyelet

This larger-bore Compact Tandem master includes the longer eyelet rod specified for the classic Ford manual pedal. Its black aluminum housing carries the dual reservoir, making it a different package from the rodless assisted-brake master with the same nominal bore. For motorsport, street-performance and specialized applications, Wilwood Engineering designs and manufactures disc brake systems and their components. The Camarillo, California company was founded by Bill Wood in 1977. Its range of rotors, calipers, valves, fittings, brake lines and master cylinders supports assemblies whose individual parts must be selected to work together.

Technical Details

• Manufacturer part number: 260-15543-BK
• Material: Aluminum
• Cylinder bore: 1-1/8"
• 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

Verify the actual Mustang-style manual pedal and 3.22–3.40-inch mounting span; Wilwood's master page references 1964–1972 factory geometry. Select the one-and-one-eighth-inch bore from the pressure and displacement requirements of the entire system. Preserve the full 1.10-inch stroke and complete piston return.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1287 instructions and specifications
• Wilwood FL162 instructions and specifications

The component must suit the completed installation. PMB Performance draws on over 20 years of experience to help you check the part identification, mating connections and required operating dimensions.