Wilwood Drilled Rear Disc and Mechanical Parking Conversion, Mazda NC MX-5 Miata 2006–2015, Black Dynapro/MC4 Calipers

Drilled-and-slotted 12.88-inch iron rotors provide the friction surfaces for this black-caliper NC rear conversion. Four-piston billet Narrow Dynapro calipers handle service braking, while the additional MC4 units operate the mechanical parking brake through the included cables. Founded in 1977 by Bill Wood, Wilwood Engineering is now based in Camarillo, California, where its work centers on disc brake systems and components. Calipers, brake rotors, master cylinders, valves, fittings and brake lines serve motorsport, street-performance and specialized installations; selecting these parts requires considering the complete braking system.

Technical Details

• Manufacturer part number — 140-15034-D.
• Supplied pad compound — BP-10.
• Caliper color, finish and hydraulic inlet — Black; Black Powder Coat; inlet 1/8-27 NPT.
• Service caliper assembly — Narrow Dynapro Radial; 4 pistons in each caliper; Stainless pistons; Billet Aluminium body; Radial mounting.
• Rotor construction and friction surface — Iron; Vented; SRP Drilled & Slotted; surface finish: Black Electro Coat.
• Rotor dimensions — outside diameter 12.88 in; 327.15 mm; thickness 0.81 in; 20.57 mm.
• Brake function and supply — Rear Brake Kits - Street Performance; Disc; Parking braking; rear axle; Sold as a kit.
• Mechanical parking system — separate MC4 parking calipers; included cable kit 330-15044.
• Flexline specification — Line kit included (manufacturer): 220-15043 (12.00 in); Rear line-kit reference: 220-15043.
• Hydraulic package contents — brake lines included: Yes; master cylinder included: No; booster included: No.
• Mechanical package contents — no separate hubs included; mounting hardware included: Yes; spindles included: No.
• Rear flange interface — OEM; axle/flange offset 0.00 in; 0 mm (distinct from rotor-hat offset).
• Rotor mounting hat — aluminum; Black E-Coat; hat offset 0.810 in.
• Nominal minimum wheel diameter — 17 in; 431.8 mm; verify full spoke and barrel clearance using the kit drawing.
• Hat wheel-stud clearance diameter — 0.520 in; 13.21 mm.
• Wheel bolt circle — 5 x 4.5 in; 5 x 114.3 mm.

Fitment & Compatibility

The listed applications cover the specified NC Miata years and trims through 2015. Follow DS1106 for the required dust-shield cut, register check and brake alignment. Route the supplied rear flexlines and unequal-length parking cables correctly, and verify the 17-inch wheel drawing.

The application list names MX-5 Miata. Verify the particular year and suspension/brake option for each model. Use the fitment table below to confirm year, model, trim and brake or suspension options.

PMB Performance has over 20 years of experience with parts and fitment details. Contact us with the original vehicle specification and any changes to its braking or suspension system.

Check the Installation instructions for the full assembly and wheel-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.