Wilwood 15/16-inch Black Remote Tandem Master for Ford Mustang-Style Manual Pedals

A fifteen-sixteenths-inch bore separates this Ford-pedal Remote Tandem master from the smaller seven-eighths-inch version. The black cylinder comes with an eyelet-equipped rod and two seven-ounce reservoirs for independently positioned fluid supplies. For the manufacturer Wilwood Engineering, disc brake system design and manufacturing encompass calipers, valves, fittings, master cylinders, brake lines and rotors. Bill Wood founded the Camarillo, California company in 1977. Its motorsport, specialized and street-performance applications rely on components selected with the complete brake assembly and its operating requirements in view.

Technical Details

• Manufacturer part number: 260-15491-BK
• Material: Aluminum / Plastic
• Cylinder bore: 15/16"
• 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
• 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 original manual pedal, eyelet engagement and slotted flange before choosing the master. Wilwood describes 1965–1973 Mustang/Ford use on the product page and 1960–1973 compatible Ford pedal geometry in its flyer. Those ranges require verification of the actual linkage; they do not replace a complete brake-system assessment.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1189 instructions and specifications
• Wilwood FL428 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.