Wilwood GS Compact Master Cylinder Rebuild Kit for 3/4-inch Bore

This service kit renews the internal and pushrod components of a three-quarter-inch GS Compact master. It includes the piston assembly, pushrod, retaining hardware and dust boot, so it must be matched to the GS family rather than selected by bore size alone. Wilwood Engineering, the Camarillo, California disc brake manufacturer founded by Bill Wood in 1977, designs and builds systems for specialized, motorsport and street-performance applications. The product range covers brake lines, valves, fittings, calipers, master cylinders and rotors. A replacement component must preserve the intended relationship between the system's hydraulic and mechanical parts.

Technical Details

• Manufacturer part number: 260-14119
• Component: Cylinder rebuild/service kit; replacement housing not included
• Service bore: 3/4"
• Service components: Piston/seal, spring, pushrod, nut, washer, boot and retaining ring
• Matching masters: GS 260-15091 remote or 260-15098 integral, 3/4-inch bore

Fitment & Compatibility

The specified applications are the 260-15091 remote and 260-15098 integral-reservoir GS masters. Inspect the bore before rebuilding: Wilwood requires replacement of a scratched or pitted master and prohibits honing its aluminum bore. Reassembly and bleeding must follow the GS instructions.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1153 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.