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Product details
The right-mounted valve leaves the opposite side of this black compact master available for the installation layout. Its 1-1/8-inch bore and pushrod-free input must be selected around the actual booster and brake configuration. Disc brake systems and components are the focus of Wilwood Engineering's design and manufacturing work for street-performance, specialized and motorsport applications. Bill Wood founded the Camarillo, California company in 1977. Its master cylinders, calipers, fittings, valves, brake lines and rotors are chosen according to the needs of the complete brake system.
Technical Details
- Manufacturer part number: 261-15662-BK
- Material: Aluminum
- Cylinder bore: 1-1/8"
- 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, 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
Match booster input depth, housing clearance and the hydraulic bore requirement. Confirm the full available stroke before adjusting any stop.
Manufacturer Documents
- Wilwood product specifications
- Wilwood FL162 instructions and specifications
- Wilwood DS1287 instructions and specifications
- Wilwood DS1178 instructions and specifications
PMB Performance offers over 20 years of parts and brake-fitment experience. For a compatibility check, provide the existing assembly and the dimensions that govern the replacement.
