Wilwood Left-Bracket Chrome Remote Tandem Master Cylinder Kit, 1-inch Bore and Captured Pushrod

This chrome powder-coated one-inch kit includes a captured manual-brake pushrod, not just the master housing. Two reservoirs and a left-mounted combination valve provide the fluid supply and pressure control for a correctly sized custom brake system. Wilwood Engineering serves motorsport, specialized and street-performance applications through disc brake system design and manufacturing. Bill Wood founded the company in 1977, and it is based in Camarillo, California. The range spans valves, rotors, fittings, calipers, brake lines and master cylinders; the installed braking assembly determines the appropriate combination of parts.

Technical Details

• Manufacturer part number: 261-14390-P
• 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: Chrome powder 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
• Kit contents: Master cylinder, left-side combination proportioning valve and bracket, formed stainless connecting tubes and mounting hardware
• Combination-valve functions: Adjustable rear pressure, isolated front/rear circuits, front-line junction and hydraulic brake-light switch
• 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

Confirm pedal ratio, clevis engagement and the actual master-plus-rod length. Measure the mounting space with the valve and plumbing installed, and provide enough travel for full piston movement before any pedal or linkage stop.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1189 instructions and specifications
• Wilwood FL162 instructions and specifications
• Wilwood FL467 instructions and specifications
• Wilwood DS1178 instructions and specifications

PMB Performance brings over 20 years of brake-system experience to component selection. Send the installed cylinder, pedal and connection details if you need help checking this configuration.