Wilwood 15/16-inch Compact Tandem Brake Master with Pushrod, Black E-Coat

A fifteen-sixteenths-inch bore sets the hydraulic size of this black Compact Tandem master. Its reservoir remains part of the aluminum housing, and the supplied threaded pushrod gives it a manual-linkage configuration rather than the rodless arrangement. Bill Wood established Wilwood Engineering in 1977. From Camarillo, California, Wilwood designs and manufactures disc brake systems and a component range covering master cylinders, rotors, calipers, fittings, valves and brake lines. Across its motorsport, specialized and street-performance applications, the correct choice depends on the complete brake system rather than one dimension alone.

Technical Details

• Manufacturer part number: 260-14958-BK
• Material: Aluminum
• Cylinder bore: 15/16"
• 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: 10.93"
• Mounting centers: 3.22–3.40"
• Pushrod dimensions: 4.38" 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

Fitment & Compatibility

Match the pedal ratio and required brake-fluid displacement before selecting the bore. Verify the 3/8-24 pushrod connection, 1.10-inch stroke and slotted flange span. The side ports require the correct supplied flare adapters and plugs; mounting compatibility alone does not establish a complete vehicle application.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1287 instructions and specifications
• Wilwood FL162 instructions and specifications

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.