Wilwood Mazda 3 Front Big-Brake Kit, Red Six-Piston Calipers, 12.88-Inch GT Rotors and Hoses for Listed 2004–2013 Trims

This front conversion retains the Mazda 3's specified hub arrangement while fitting red six-piston Dynapro calipers and GT-slotted, two-piece rotors. Separate hats locate the 12.88-inch friction rings, and the supplied line kit provides the flexible hydraulic connections. The braking components are manufactured by Wilwood Engineering, founded by Bill Wood in 1977 and based in Camarillo, California. The company's design and manufacturing work includes disc brake systems, calipers, rotors, master cylinders, valves, fittings and brake lines. Across motorsport, street-performance and specialized applications, each selected part needs to suit the complete system.

Technical Details

• 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: GT Slotted.
• Rotor-hat material: Aluminum. Hat offset: 0.470 inches; this hat dimension is separate from axle offset.
• Rotor surface finish: Black Electro Coat.

• Manufacturer: Wilwood; manufacturer part number: 140-13581-R. 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.

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

• 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.

Fitment & Compatibility

Use the detailed application rows to distinguish trim and engine groups across 2004–2013. The kit is specified to retain the matched factory master-cylinder output and ABS functions; confirm both the factory brake configuration and the wheel-clearance drawing before conversion.

Use the fitment table below for the complete model, year, submodel and brake-option conditions; every listed condition must match the installed vehicle.

Manufacturer Documents

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

PMB Performance brings over 20 years of parts and brake-fitment experience to helping you select the correct configuration. Send the vehicle details and measured brake interfaces if you need help confirming this kit.