Wilwood Red Six-Piston Front Conversion for Mazda MX-5 Miata (2006–2015), Drilled/Slotted 14-Inch Rotors

Red Superlite calipers and drilled/slotted 14-inch rotor rings identify this Wilwood front conversion for the supported MX-5 Miata applications. The rings use separate aluminum hats with the compatible original hubs retained. Pads, brackets and front hoses are supplied for the selected six-piston assembly, which must be assessed as part of the complete braking system rather than a cosmetic caliper replacement. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.

Technical Details

• Manufacturer part number: 140-12911-DR
• Type: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hat).
• Calipers: Forged Narrow Superlite 6R; 6-piston; Red Powder Coat.
• Piston bore dimensions: 1.38, 1.12, 1.12 inches; stainless pistons. Caliper mounting: radial.
• Included pad compound: BP-10.
• Rotors: 14.00-inch outside diameter × 1.10-inch width; SRP Drilled & Slotted; Spec-37 Iron; Black Electro Coat surface finish.
• Rotor ventilation: 72 curved vanes.
• Rotor hats: Big Brake Hat - Flared Bell; Aluminum; Black E-Coat.
• Wheel bolt circles: 5 x 4.53 inches.
• Included: paired calipers, pads, rotors and mounting hardware, caliper mounting brackets, rotor hats.
• Application-specific hydraulic flex lines included.
• Conditional wheel minimum: 18 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.

Fitment & Compatibility

Confirm model-year coverage and inspect the existing front mounting hardware before assembly. Compare any altered hub or upright directly with the installation geometry. Center the caliper over the rotor using the instructed shims and check that the assembly turns freely. The proposed wheel must clear the manufacturer's full template at its barrel and spokes. Route the supplied lines away from steering and suspension movement and review the hydraulic balance with the car's rear package.

Match the individual year, model, submodel and equipment conditions in the fitment table below.

Wilwood installation documents: Installation instructions.

PMB Performance has over 20 years of brake-system experience. Contact us with the vehicle and installed hardware details for help confirming the complete setup.

Manufacturer warning, 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.