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Product details
The one-inch bore and input without a supplied pushrod distinguish this chrome powder-coated compact tandem assembly. Its right-side valve mount needs to fit the available space around the compatible booster or mechanical linkage. 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: 261-15661-P
- 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: 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, right-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
Fitment & Compatibility
Verify booster-to-master engagement and the required free play. Match the right valve bracket, line adapters and reservoir clearance to the installed system.
Manufacturer Documents
- Wilwood product specifications
- Wilwood FL162 instructions and specifications
- Wilwood DS1287 instructions and specifications
- Wilwood FL467 instructions and specifications
- Wilwood DS1178 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.
