Wilwood Rear AERO4 Conversion with Red MC4 Parking Calipers & SRP Rotors, C7-Upright Custom Chassis

C7 Front Uprights on Custom Rear Chassis applications using the specified mounting arrangement can use this Wilwood AERO4/MC4 rear brake conversion. It combines red 4-piston calipers, pads and srp drilled & slotted 14.00-inch rotors, with the exact fitment qualifications set out below. Wilwood Engineering designs and manufactures disc-brake systems and components in Camarillo, California, where the company founded by Bill Wood in 1977 is based. Its range serves specialized applications, motorsport and street-performance vehicles, including calipers, brake rotors, master cylinders, valves, fittings and brake lines chosen to match a complete system.

Technical Details

• Manufacturer part number: 140-17142-DR; supplied as an axle kit.
• Brake rotor size: 14.00-inch outside diameter × 1.10-inch thickness; vented friction section.
• Rotor/hat mounting-hole pattern: 5 X 4.5 in; 5 X 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; cataloged hole clearances 0.580 in; 14.73 mm; 0.520 in; 13.21 mm. These are rotor or hat drillings, not replacement wheel studs. The retained hub or axle determines the vehicle wheel pattern.
• Hydraulic lines: Hydraulic flexlines and fittings are not included; select compatible lines for the complete installation.
• Hardware and retained components: Mounting hardware supplied; existing wheel hubs retained; spindles, master cylinder and brake booster are not included.
• Rotor hats: Aluminum big brake hat - flared bell; Black E-Coat; hat offset 0.540 inches. Hat offset is distinct from axle offset.
• Rotor specification: Material: Spec-37 Iron; Type: SRP Drilled Rotor; Style: SRP Drilled & Slotted; Surface Finish: Black Electro Coat.
• Service calipers: AERO4; 4 pistons per caliper; Red Powder Coat; radial mounting; stainless pistons.
• Parking brake: Separate MC4 mechanical parking calipers supplied; arrange suitable cable operation.
• Wheel envelope: 18-inch minimum nominal wheel diameter; verify the entire wheel-clearance drawing, including spoke and barrel shape.
• Supplied friction pads: BP-10 compound; match operating conditions to the intended use.
• Hydraulic sizing: cataloged bore sizes 1.12, 1.12 inches; piston area 1.98 square inches; inlet 1/8-27 NPT.

Fitment & Compatibility

DS1528 documents a C7 Corvette front upright used at the rear of a custom chassis. Verify the Roadster Shop Fast Track IRS arrangement and exact upright, hub register, stud pattern and 18-inch wheel clearance; this is not a stock C7 rear-brake replacement. The MC4 is a separate mechanically actuated parking caliper. Plan compatible cable actuation and separate hydraulic hoses.

For help matching the brake hardware, contact PMB Performance with your VIN, photographs and measurements. Our team has over 20 years of experience with parts and fitment details.

Review Installation instructions for the complete installation and clearance requirements.

Manufacturer Warning

Applicable to brake pads only. WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.