Wilwood 7/8-inch High Volume Brake Master Cylinder with Steel Reservoir Lid

An 8.2 oz integral reservoir gives this 7/8-inch master a substantial fluid supply without a remote feed hose. The single pressure outlet and threaded pushrod are intended for a deliberately matched hydraulic circuit, including dual-master pedal installations. Based in Camarillo, California, Wilwood Engineering has designed and manufactured disc brake systems since Bill Wood founded the company in 1977. Its fittings, valves, calipers, brake lines, master cylinders and rotors are used across motorsport, street-performance and specialized applications. Matching a component means checking both its own specification and the braking assembly around it.

Technical Details

• Manufacturer part number: 260-6765
• Material: Aluminum / Steel
• Cylinder bore: 7/8"
• Pressure circuits: 1
• Stroke Length: 1.43 in
• Listed displacement per stroke: 0.85 cu in
• Reservoir Type: Integral
• Fluid capacity: 8.2 oz
• Flange-to-end length: 4.87"
• Overall Length: 9.15"
• Mounting centers: 2.25"
• Pushrod dimensions: 4.28" x 5/16-24
• Finish: Bare
• Reservoir: Integral 8.2 oz with steel lid and bellows
• Pressure outlet: 1/8-27 NPT; separate pipe-to-flare adapter required
• Mounting: 2.25-inch flange or 3.00-inch side centers

Fitment & Compatibility

Choose the bore to suit the caliper displacement and pedal leverage, not reservoir capacity alone. Verify 1.43-inch listed stroke clearance, both mounting dimensions and the separate adapter needed at the NPT pressure outlet.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS412 instructions and specifications
• Wilwood FL94 instructions and specifications
• Wilwood FL162 instructions and specifications

PMB Performance has more than 20 years of experience matching brake components. Share the actual mounting, linkage and hydraulic arrangement when requesting fitment assistance.