Wilwood GS Compact Master for Remote Reservoirs, 13/16-inch Bore, Black E-Coat

The thirteen-sixteenths-inch GS master delivers a specified 0.65 cubic inch across its 1.25-inch stroke. A remote reservoir supplies the threaded inlet, and the single inverted-flare outlet connects the cylinder to the selected hydraulic circuit. 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: 260-15092
• Material: Aluminum
• Cylinder bore: 13/16"
• Pressure circuits: 1
• Stroke Length: 1.25 in
• Listed displacement per stroke: 0.65 cu in
• Reservoir Type: Remote
• Flange-to-end length: 4.10
• Overall Length: Exact page: 7.85 inches; DS-1151 Figure 1 remote drawing: 7.99 inches. Confirm installed clearance.
• Mounting centers: 2.25"
• Pushrod dimensions: 3.37" x 5/16-24
• Finish: Black E-coat
• Pressure outlet: 3/8-24 inverted flare
• Fluid selection: DOT 3, DOT 4 or DOT 5.1 for performance use; DOT 5 silicone not recommended
• Reservoir package: Remote reservoir and feed connection purchased separately
• Feed inlet: 7/16-20 thread
• Fluid inlet: 7/16-20 in
• Outlet connection: 3/8-24 IF Female

Fitment & Compatibility

Choose the bore only after checking pedal ratio and circuit volume, then provide the separate reservoir and inlet connection. The flange centers are 2.25 inches and the rod thread is 5/16-24. Use the prescribed GS bleeding procedure and avoid restricting piston travel or return.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1151 instructions and specifications
• Wilwood FL402 instructions and specifications
• Wilwood FL162 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.