Wilwood 5/8-inch Compact Remote Master Cylinder Kit, Black, with Two Reservoir Sizes

A 5/8-inch bore and short aluminum body make this master cylinder suitable for installations where the hydraulic sizing is correct but mounting space is limited. The kit supplies two reservoir sizes and the hardware to arrange the selected reservoir directly on the cylinder or remotely by hose. For the manufacturer Wilwood Engineering, disc brake system design and manufacturing encompass calipers, valves, fittings, master cylinders, brake lines and rotors. Bill Wood founded the Camarillo, California company in 1977. Its motorsport, specialized and street-performance applications rely on components selected with the complete brake assembly and its operating requirements in view.

Technical Details

• Manufacturer part number: 260-10371
• 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: 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

Match the 2.25-inch mounting centers, 5/16-24 pushrod thread and required 1.12-inch piston travel to the pedal assembly. Select the reservoir capacity for the brake system's fluid demand, and route the pressure line from the 1/8-27 NPT outlet. Use the installation sheet for bench bleeding and residual-valve requirements.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS608 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.