Wilwood GT Slotted 14-Inch Front Brake Kit, Red Calipers, Mazda MX-5 Miata (2006–2015)

Red six-piston Superlite calipers work with GT slotted 14-inch rotors in this Wilwood front package for the listed Mazda MX-5 Miata models. Its separate-hat rotor construction uses the compatible original hubs and the kit-specific bracket arrangement. Wilwood's installation instructions include the front flex lines with the pads and hardware, while the actual wheel interior must accommodate the larger brake envelope. 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-R
• 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; GT 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

Read the exact year and trim row, then confirm factory spindle and hub registration before installing the hats. Follow the assembly and bracket-shimming instructions to position the rotor and caliper correctly. Use the complete 18-inch minimum clearance drawing to check the proposed rim's barrel and spokes. Ensure the hydraulic hoses remain free through steering lock and suspension travel. Verify pedal travel and braking proportion with the existing rear setup after the installation is complete.

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.