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Product details
A one-inch bore and pushrod-free input define this compact tandem assembly. The black master is paired with a left valve mount and formed fluid tubes for the documented hydraulic arrangement. A disc brake manufacturer based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. It designs and manufactures calipers, rotors, brake lines, fittings, valves and master cylinders for street-performance, motorsport and specialized systems. The chosen service part must agree with the complete system's connections, dimensions and operating demands.
Technical Details
- Manufacturer part number: 261-14963-BK
- 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: 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
Fitment & Compatibility
Compare the booster rod and master-cylinder input depth before installation. Confirm the left-side valve clearance and required piston travel.
Manufacturer Documents
- Wilwood product specifications
- Wilwood FL162 instructions and specifications
- Wilwood DS1287 instructions and specifications
- Wilwood DS1178 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.
