Wilwood Black Four-Piston Rear Disc Conversion for Corvette C7, Drilled 14.25-Inch Rotors and Original Parking-Brake Interface, 2014–2019

Drilled-and-slotted friction rings distinguish this black-caliper C7 rear kit. Separate iron hats locate the rotors and retain the factory parking-brake drum interface, with BP-10 pads and the dedicated rear hose set supplied for the service-brake conversion. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its range spans calipers, brake rotors, master cylinders, valves, fittings and brake lines, with each component chosen to suit the complete brake system.

Technical Details

• Manufacturer: Wilwood; manufacturer part number: 140-13698-D. Supplied quantity: Sold as a kit.
• Application category: Rear Brake Kits - Street Performance. Axle/spindle category: Rear Kits. Brake function: Disc; Parking.
• Separate wheel hubs included: No. Retain only the hub arrangement specified for this kit.
• Mounting hardware included: Yes. Spindles included: No. Master cylinder included: No. Brake booster included: No.
• Flexible brake lines included: Yes; matched line kit 220-9101, 16.00 inches nominal length.
• The rotor hats retain the specified original mechanical parking-brake shoes and assembly; a replacement parking-brake mechanism is not supplied.

• Wheel interface: 5 X 4.75 in; 5 X 120.65 mm; 5 X 4.72 in; 5 X 119.89 mm; 5 X 4.5 in; 5 X 114.3 mm. Rotor/hat wheel-stud clearance: 0.520 in; 13.21 mm; 0.640 in; 16.26 mm.
• Nominal minimum wheel diameter: 18 in; 457.2 mm. Verify the full wheel-clearance drawing; diameter alone does not establish barrel or spoke clearance.
• Housing/spindle flange: OEM. Flange/axle offset: 0.00 in; 0 mm.

• Rotor: 14.25 in; 361.95 mm outside diameter; 1.10 in; 27.94 mm thickness. Material: Spec-37 Iron. Construction: Vented. Friction-face style: SRP Drilled & Slotted.
• Rotor-hat material: Iron. Hat offset: 0.730 inches; this hat dimension is separate from axle offset.
• Rotor surface finish: Black Electro Coat.

• Calipers: 4 stainless pistons per caliper; radial mounting; forged aluminium bodies. Color: Black. Finish: Black Powder Coat. Inlet thread: 1/8-27 NPT.
• Caliper family: AERO4. Brake-pad compound: BP-10.

Fitment & Compatibility

Verify the 2014–2019 Corvette version and brake equipment in the table below. Confirm the retained parking shoes, hub register and required backing-plate clearance against DS1067. Use the wheel diagram to check spokes and barrel as well as nominal rim diameter.

The application includes specified Stingray, Z51, Z06, Grand Sport and ZR1 rows within 2014–2019; verify each trim's individual year range and original brake equipment. A shared C7 body designation does not establish compatibility with every factory brake package.

Manufacturer Documents

• Wilwood product specifications and wheel-clearance drawing
• Installation instructions

For help matching the conversion to your existing hardware, contact PMB Performance with the vehicle details and the relevant measurements. Our parts and fitment work draws on over 20 years of experience.