Wilwood Chrome Powder-Coated High-Volume Tandem Master, 15/16-inch Bore and Threaded Pushrod

Chrome powder coating provides the exterior finish on this pushrod-equipped high-volume master. Its two reservoir chambers and selectable side connections support a custom dual-circuit brake layout without dictating a particular vehicle or axle pressure balance. Camarillo, California is home to Wilwood Engineering, founded in 1977 by Bill Wood. Its disc brake design and manufacturing range includes valves, master cylinders, calipers, brake lines, rotors and fittings for street-performance, specialized and motorsport use. These parts are selected together so the completed braking system has the required hydraulic and mechanical arrangement.

Technical Details

• Manufacturer part number: 260-13375-P
• Material: Aluminum
• Cylinder bore: 15/16"
• Pressure circuits: 2
• Stroke Length: 1.10 in
• Reservoir Type: Integral
• Fluid capacity: 8.0 / 4.8 oz
• Flange-to-end length: 8.15"
• Overall Length: 12.26"
• Mounting centers: 3.22–3.40"
• Pushrod dimensions: 4.11" x 3/8-24
• Finish: Chrome powder coat
• Native pressure ports: 1/2-20 at both circuits; use the correct included outlet adapters and seal washers
• Circuit outlet adapters: Primary: 3/8-24 or 1/2-20 inverted flare; secondary: 3/8-24 or 9/16-18 inverted flare
• Hydraulic relationship: Equal pressure output from the two circuits before external proportioning; 2:1 primary/secondary volume relationship
• Service: Factory rebuild only; do not disassemble the tandem piston assembly

Fitment & Compatibility

Verify the manual linkage, 3/8-24 pushrod connection and 1.10-inch piston travel. Fit the supplied inverted-flare adapters to double-flared brake lines and seal the unused outlets with the included plugs and washers. Wilwood requires factory service for this high-volume tandem design; it is not a universal user-rebuildable master.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS487 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.