Wilwood 13/16-inch Short Compact Master Cylinder Kit with Direct or Remote Reservoirs

With a 13/16-inch bore, this Compact master cylinder occupies the middle of the available bore range while retaining the short-body mounting layout. Its included reservoir components allow either direct mounting or a remote feed without changing the cylinder's 1.12-inch stroke. 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: 260-10373
• Material: Aluminum / Plastic
• Cylinder bore: 13/16"
• Pressure circuits: 1
• Stroke Length: 1.12 in
• Listed displacement per stroke: 0.58 cu in
• Reservoir Type: Remote
• Flange-to-end length: 3.37"
• Overall Length: 7.80"
• Mounting centers: 2.25 inches, vertical flange
• Pushrod dimensions: 4.00" x 5/16-24
• Finish: Black E-coat
• Inlet arrangement: 0.87-inch seating diameter with 11/16-20 internal thread; this is the reservoir feed, not the pressure outlet
• Pressure connection: 1/8-27 NPT outlet; select the appropriate pressure-line adapter
• Reservoir package: 7 and 10 oz plastic reservoir bodies, cap, remote hose, adapters, clamps and bracket hardware
• Fluid selection: DOT 3, DOT 4 or DOT 5.1 for racing/performance use; DOT 5 silicone is not recommended for those uses

Fitment & Compatibility

Select the bore by the complete hydraulic system rather than by vehicle model alone. The flange mounts on 2.25-inch centers and the pushrod uses 5/16-24 threads. Check space for the chosen reservoir and connect the pressure line with a proper 1/8-27 NPT fitting.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS608 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.