Wilwood Black 7/8-inch Compact Tandem Master for 1963–1967 Chevrolet Corvette C2

The C2-specific pushrod adapts this seven-eighths-inch Compact Tandem master to the specified Corvette manual-brake arrangement. A black aluminum housing and integral two-chamber reservoir provide a dual-circuit configuration for a properly matched brake conversion. Disc brake systems and components are the focus of Wilwood Engineering's design and manufacturing work for street-performance, specialized and motorsport applications. Bill Wood founded the Camarillo, California company in 1977. Its master cylinders, calipers, fittings, valves, brake lines and rotors are chosen according to the needs of the complete brake system.

Technical Details

• Manufacturer part number: 260-16520-BK
• Material: Aluminum
• Cylinder bore: 7/8"
• Pressure circuits: 2
• Stroke Length: 1.10 in
• Reservoir Type: Integral tandem chambers, 7.8 and 4.7 oz
• Fluid capacity: 7.8 / 4.7 oz
• Flange-to-end length: 6.55"
• Mounting centers: 3.22–3.40"
• Finish: Black E-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
• C2 linkage dimensions: Exact page lists 2.73-inch rod and 9.28-inch overall; DS-1287 shows 2.90 inches from flange to rod tip. Confirm the actual assembly and pedal engagement.
• Valve clearance: Optional bracket kit 260-14248 does not fit the C2 installation space; mount the valve separately

Fitment & Compatibility

Wilwood identifies 1963–1964 drum-brake cars converting to tandem circuits, 1965–1967 non-power disc cars and C2 applications with compatible Wilwood kits. Check the actual brakes, pedal and bore requirement. The optional 260-14248 proportioning-valve mounting kit will not fit because of C2 space constraints; arrange any required valve separately.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1287 instructions and specifications
• Wilwood FL162 instructions and specifications

For help choosing the correct service or conversion component, contact PMB Performance with the existing brake-system details. Our team has over 20 years of experience working through parts and fitment requirements.