Wilwood Left Combination Valve with Black 1-1/8-inch Remote Master Cylinder, Rodless Power-Brake Kit

This black Remote Tandem kit uses the 1-1/8-inch bore primarily associated with assisted brakes. The left-side valve assembly and two reservoir feeds are supplied around a master that leaves the operating pushrod or booster connection to the installation. Founded in 1977 by Bill Wood, Wilwood Engineering carries out disc brake design and manufacturing from Camarillo, California. Its rotors, calipers, brake lines, master cylinders, fittings and valves serve motorsport, street-performance and specialized applications. Parts within that range must be matched to one another and to the requirements of the complete braking system.

Technical Details

• Manufacturer part number: 261-14252-BK
• Material: Aluminum / Plastic
• Cylinder bore: 1-1/8"
• Pressure circuits: 2
• Reservoir Type: Remote
• Fluid capacity: 7.0 / 7.0 oz
• Flange-to-end length: 6.56"
• 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
• 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

Fitment & Compatibility

Confirm that the power-assist system and calipers require this bore. Check piston engagement, 3.22–3.40-inch flange centers and full travel, then arrange the remote reservoirs and left-side pressure plumbing without interference.

Manufacturer Documents

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

PMB Performance has more than 20 years of experience matching brake components. Share the actual mounting, linkage and hydraulic arrangement when requesting fitment assistance.