Wilwood 3/4-inch GS Compact Remote Master Cylinder with Threaded Pushrod

This three-quarter-inch GS master supplies a specified 0.55 cubic inch of displacement over its working stroke. The remote-feed design leaves the fluid container outside the cylinder package, while a threaded pushrod connects the rebuildable body to the pedal linkage. Wilwood Engineering designs and manufactures disc brake systems in Camarillo, California. Bill Wood founded the company in 1977; its range now encompasses calipers, rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. Each component must suit the hydraulic and mechanical requirements of the complete system.

Technical Details

• Manufacturer part number: 260-15091
• Material: Aluminum
• Cylinder bore: 3/4"
• Pressure circuits: 1
• Stroke Length: 1.25 in
• Listed displacement per stroke: 0.55 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

Provide a compatible remote reservoir and feed hardware, and keep the hose protected from heat and interference. Check the 2.25-inch flange spacing and permit complete piston return. Wilwood identifies rebuild kit 260-14119 for later service, provided the aluminum bore remains undamaged.

Manufacturer Documents

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

PMB Performance brings over 20 years of brake-system experience to component selection. Send the installed cylinder, pedal and connection details if you need help checking this configuration.