Wilwood One-Inch Chrome Powder-Coated Compact Master Cylinder Kit for Mustang, Left Valve and Pushrod

SKU: 261-15544-P

$535.43

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Product details

The chrome powder-coated, one-inch compact master supplies tandem pressure circuits and the specified Mustang manual pushrod. A left valve bracket, combination valve and formed tubes provide the master-to-valve connections. From calipers and rotors to master cylinders, valves, brake lines and fittings, Wilwood Engineering's range covers disc brake systems and service components. Bill Wood founded the company in 1977; it is based in Camarillo, California and designs and manufactures for street-performance, specialized and motorsport applications. All component choices need to account for the complete system.

Technical Details

Manufacturer part number: 261-15544-P
Material: Aluminum
Cylinder bore: 1.00"
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: Chrome powder 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
Kit contents: Master cylinder, left-side combination proportioning valve and bracket, formed stainless connecting tubes and mounting hardware
Combination-valve functions: Adjustable rear pressure, isolated front/rear circuits, front-line junction and hydraulic brake-light switch

Fitment & Compatibility

Confirm the Mustang flange and manual-pedal arrangement. Select the bore with the installed calipers, available travel and required pedal effort.

Wilwood’s kit summary gives a 1964–1973 Ford/Mustang range, while the corresponding bare-master family identifies 1964–1972. Confirm the actual manual pedal, supplied eyelet and mounting geometry, particularly for 1973, before ordering.

Manufacturer Documents

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.