Wilwood Drilled 12.88-Inch Front Brake Conversion for Mazda 3, Black Dynapro 6 Calipers and Aluminum Hats, Selected 2004–2013 Applications

The drilled-and-slotted configuration replaces the selected Mazda 3 front brake package with six-piston Dynapro calipers, Spec-37 iron rotors and aluminum mounting hats. Black calipers, BP-10 pads, bracket hardware and a dedicated flexline set complete the supplied brake components. This is a Wilwood Engineering conversion package. Bill Wood founded the company in 1977, and it is based in Camarillo, California. Wilwood designs and manufactures disc brake systems and components, from calipers and brake rotors to master cylinders, valves, fittings and brake lines. Its motorsport, street-performance and specialized applications require each component to match the complete brake system.

Technical Details

• Calipers: 6 stainless pistons per caliper; lug mounting; forged aluminium bodies. Color: Black. Finish: Black Powder Coat. Inlet thread: 1/8-27 NPT.
• Caliper family: Dynapro 6. Brake-pad compound: BP-10.

• Rotor: 12.88 in; 327.15 mm outside diameter; 1.10 in; 27.94 mm thickness. Material: Spec-37 Iron. Construction: Vented. Friction-face style: SRP Drilled & Slotted.
• Rotor-hat material: Aluminum. Hat offset: 0.470 inches; this hat dimension is separate from axle offset.
• Rotor surface finish: Black Electro Coat.

• Wheel interface: 5 X 4.5 in; 5 X 114.3 mm. Rotor/hat wheel-stud clearance: 0.580 in; 14.73 mm.
• Nominal minimum wheel diameter: 17 in; 431.8 mm. Verify the full wheel-clearance drawing; diameter alone does not establish barrel or spoke clearance.

• Manufacturer: Wilwood; manufacturer part number: 140-13581-D. Supplied quantity: Sold as a kit.
• Application category: Front Brake Kits - Street Performance. Axle/spindle category: Front Kits. Brake function: Disc.
• Separate wheel hubs included: No. Retain only the hub arrangement specified for this kit.
• Mounting hardware included: Yes. Spindles included: No. Master cylinder included: No. Brake booster included: No.
• Flexible brake lines included: Yes; matched line kit 220-13667, 20.00 inches nominal length.

Fitment & Compatibility

Match the year and trim in the table below rather than treating all Mazda 3 brakes as identical. Check the original hub interface, caliper-to-wheel space and full steering travel with the new hoses. The nominal 17-inch minimum does not guarantee spoke clearance.

Manufacturer Documents

• Wilwood product specifications and wheel-clearance drawing
• Installation instructions

Supply the vehicle details and current brake configuration when contacting PMB Performance for fitment help. Our team brings over 20 years of parts experience to checking the combination.