Wilwood 15/16-inch Black Tandem Master with C2 Pushrod for 1963–1967 Chevrolet Corvette

A fifteen-sixteenths-inch bore offers the alternate hydraulic size in this Corvette C2 Compact Tandem family. The black master includes the shorter C2 pushrod and an integral dual reservoir, so bore selection and linkage fit can be assessed together. 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: 260-16521-BK
• Material: Aluminum
• Cylinder bore: 15/16"
• 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

For 1963–1964 drum-brake C2s, plan the separate circuits required by a tandem conversion. On 1965–1967 factory disc cars, Wilwood's tuning application is the non-power arrangement; compatible Wilwood-kit applications also require a system match. The 260-14248 valve bracket is excluded by C2 space limitations.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS1287 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.