Wilwood Black Remote Tandem Master, 7/8-inch Bore, with Pushrod and Two Reservoirs

A black tandem master and two separate seven-ounce reservoirs form this seven-eighths-inch package. The supplied threaded pushrod supports an appropriate manual linkage, while remote reservoir brackets let the fluid containers be positioned where they can be filled and serviced. Wilwood Engineering's design and manufacturing work covers disc brake systems for specialized applications, street performance and motorsport. Founded by Bill Wood in 1977, the company operates from Camarillo, California. Its component range includes master cylinders, fittings, brake lines, rotors, valves and calipers, each requiring selection in the context of the complete brake system.

Technical Details

• Manufacturer part number: 260-14241-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
• 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

Match the slotted 3.22–3.40-inch flange and 3/8-24 pushrod to the pedal assembly. Route each reservoir feed to its corresponding chamber and retain independent front and rear circuits. Verify the actual full piston travel before a pedal stop and follow the remote tandem instructions for adapter selection and unused-port plugs.

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.