Wilwood Front Red Six-Piston Caliper/Rotor Conversion, Mazda MX-5 Miata (2006–2015), 12.88-Inch Drilled Rings and Flex Lines

Red Superlite 6R calipers and drilled/slotted rotor faces distinguish this Wilwood front conversion for the listed MX-5 Miata models. The 12.88-inch rotor rings attach to separate hats with the compatible factory hubs retained. BP-10 pads, mounting components and the front flex-line kit specified by Wilwood's installation instructions accompany this selected six-piston package. 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: 140-12907-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: 12.88-inch outside diameter × 1.10-inch width; SRP Drilled & Slotted; Spec-37 Iron; Black Electro Coat surface finish.
• Rotor ventilation: 48 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: 17 inches. Compare the complete wheel-clearance diagram with both barrel and spoke dimensions.
• Supplied wheel spacers are required for stock-wheel clearance. Use the DS956 clearance drawing with its specified spacer installed; account for the resulting wheel position.

Fitment & Compatibility

Verify production year and the original upright and hub arrangement before ordering. Check hat seating and rotor registration, then align the calipers according to the bracket and shim instructions. Proposed wheels need comparison with the full clearance template, including spoke depth. Secure the supplied hoses so they cannot stretch or rub at steering lock. Assess the front conversion with the installed rear brakes and hydraulic components rather than selecting by rotor diameter or caliper color alone.

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.