Wilwood Black One-Inch Compact Tandem Master Cylinder, Without Pushrod

The one-inch Compact Tandem master is offered without a pushrod for installation with a compatible separate pedal or booster actuator. Its black aluminum housing incorporates both reservoir chambers and provides hydraulic outlets on either side. 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: 260-14959-BK
• 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: 7.16"
• Mounting centers: 3.22–3.40"
• 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

Wilwood permits this bore in suitable manual and power-assisted applications, subject to the complete system design. Check piston-recess depth, actuator engagement and the supplied spacer where required by a short-rod booster. Preserve 1.10 inches of full piston travel and do not preload the master at rest.

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.