Wilwood Side-Mount Compact Master Cylinder Kit, 5/8-inch Bore, 3.00-inch Mounting Centers

This five-eighths-inch Compact master uses integral side lugs instead of the usual end flange. Its reservoir kit provides a choice of direct or remote mounting, letting the installer keep the hydraulic cylinder close to the pedal in a confined installation. Wilwood Engineering's disc brake systems bring together calipers, rotors, valves, master cylinders, fittings and brake lines. Founded by Bill Wood in 1977 and based in Camarillo, California, the company designs and manufactures products for motorsport, street-performance and specialized applications. The installed system determines which individual component is appropriate.

Technical Details

• Manufacturer part number: 260-12384
• Material: Aluminum / Plastic
• Cylinder bore: 5/8"
• Pressure circuits: 1
• Stroke Length: 1.12 in
• Listed displacement per stroke: 0.34 cu in
• Reservoir Type: Remote
• Flange-to-end length: 3.37"
• Overall Length: 8.84"
• Mounting centers: 3.00 inches, side mount
• Pushrod dimensions: 5.01" 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: 4.5 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

Check the 3.00-inch side-mount spacing, pushrod alignment and full 1.12-inch stroke. The small reservoir is 4.5 ounces and the large is ten ounces in DS944. Connect the pressure line to the 1/8-27 NPT outlet and support the separate reservoir-feed hose if remote mounting is chosen.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS944 instructions and specifications
• Wilwood FL162 instructions and specifications

The component must suit the completed installation. PMB Performance draws on over 20 years of experience to help you check the part identification, mating connections and required operating dimensions.