Wilwood One-Inch Remote Tandem Master with Pushrod and Reservoirs, Black Finish

An included threaded pedal rod distinguishes this black one-inch master from the otherwise similar rodless Remote Tandem model. The package supplies the cylinder, twin seven-ounce reservoirs and their remote mounting components for a properly designed dual-circuit brake system. Wilwood Engineering began in 1977 under founder Bill Wood and is based in Camarillo, California. The company designs and builds disc brake systems for motorsport, street-performance and specialized applications, with a range extending through calipers, rotors, valves, brake lines, fittings and master cylinders. Individual parts must be compatible with the system in which they operate.

Technical Details

• Manufacturer part number: 260-14388-BK
• Material: Aluminum / Plastic
• Cylinder bore: 1.00"
• Pressure circuits: 2
• Reservoir Type: Remote
• Fluid capacity: 7.0 / 7.0 oz
• Flange-to-end length: 6.56"
• 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
• Housing envelope: 7.16 inches as listed, excluding the projecting operating rod; verify the complete rod-equipped length

Fitment & Compatibility

Check the rod's 3/8-24 connection and usable adjustment against the pedal geometry. The stated cylinder housing length must not be used as the complete pushrod-to-nose installation envelope. Verify clearance with the assembled linkage, preserve full piston travel and use the supplied flare adapters in the selected side outlets.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1189 instructions and specifications
• Wilwood FL428 instructions and specifications
• Wilwood FL162 instructions and specifications

With more than 20 years of experience, PMB Performance can help compare the specified part with the assembly you are servicing. Include the existing part identification and relevant hydraulic dimensions.