Wilwood Black 7/8-Inch Remote Tandem Master Cylinder Kit for Classic Mustang, Left Valve and Pushrod

SKU: 261-15492-BK

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Product details

The black remote tandem master uses a 7/8-inch bore and a pushrod for the specified classic Mustang installation. A left-side valve bracket and connecting tubes complete the master-to-valve portion of the system. The broader Wilwood Engineering range includes calipers, brake lines, rotors, valves, fittings and master cylinders for disc brake systems. Established by Bill Wood in 1977 and based in Camarillo, California, Wilwood designs and manufactures for motorsport, street-performance and specialized applications. Correct component selection considers the complete system's geometry and hydraulic requirements.

Technical Details

  • Manufacturer part number: 261-15492-BK
  • Material: Aluminum / Plastic
  • Cylinder bore: 7/8"
  • Pressure circuits: 2
  • Reservoir Type: Remote
  • Fluid capacity: 7.0 / 7.0 oz
  • Flange-to-end length: 6.56"
  • Overall Length: 10.76"
  • Mounting centers: 3.22–3.40"
  • Pushrod dimensions: 4.23" x 3/8-24
  • 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
  • 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
  • Travel check: DS-1189 specifies 1.12-inch stroke and also states 1.10 inches in its full-travel warning; verify actual full piston travel before the pedal reaches a stop
  • Reservoir feed: 0.87-inch inlet seating diameter with 11/16-20 internal thread; 1/4-inch feed-hose adapters for the standard remote reservoirs
  • Reservoir package: Two 7 oz reservoirs with caps, brackets, clamps, hoses and feed adapters for direct or remote mounting

Fitment & Compatibility

Check the exact Mustang pedal, flange and pushrod interface. Mount and connect the remote reservoirs according to the current tandem-master instructions.

Manufacturer Documents

PMB Performance offers over 20 years of parts and brake-fitment experience. For a compatibility check, provide the existing assembly and the dimensions that govern the replacement.