Wilwood Rear Two-Piece Plain Brake Rotor Kit for Mazda Miata Sport Package (2001–2005), 10.85-Inch

This Two-Piece Rotor rear brake rotor kit renews the Mazda Miata Sport Package rotor-and-hat assembly while retaining the factory rear calipers. The 10.85-inch plain face friction rings are 0.39 inch thick and attach to separate aluminum hats. Wilwood Engineering, founded by Bill Wood in 1977, is based in Camarillo, California. Its work covers the design and manufacture of disc-brake systems and components for specialized vehicles, motorsport and street-performance use. The product range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines; compatibility depends on the complete system.

Technical Details

• Manufacturer part number: 140-17644; supplied as an axle kit.
• Wheel envelope: 15-inch minimum nominal wheel diameter; verify the entire wheel-clearance drawing, including spoke and barrel shape.
• Rotor specification: Material: Iron; Type: solid replacement rotor ring; Style: Plain Face; Surface Finish: Plain.
• Brake rotor size: 10.85-inch outside diameter × 0.39-inch thickness; solid construction.
• Rotor/hat mounting-hole pattern: 4 x 3.93 in; 4 x 99.82 mm; cataloged hole clearances 0.500 in; 12.70 mm. These are rotor or hat drillings, not replacement wheel studs. The retained hub or axle determines the vehicle wheel pattern.
• Rotor hats: Aluminum big brake hat - short offset; Black E-Coat; hat offset 0.750 inches. Hat offset is distinct from axle offset.
• Hardware and retained components: Rotor rings, aluminum hats, registration adapters and rotor bolts supplied; reuse the factory rear calipers and wheel hubs. No brake pads are supplied.
• Hydraulic lines: Original rear calipers and hydraulic connection remain; hydraulic hoses are not included.

Fitment & Compatibility

DS1566 specifies the 2001–2005 Mazda Miata with Sport Package and retains the original rear calipers. Match the Sport/Sports Suspension brake package and the 2001 VIN split shown below. These 10.85-inch solid rotor rings bolt to aluminum hats with supplied registration adapters. No calipers, pads or hydraulic hoses are included; the 15-inch wheel envelope and original hub register must be checked. Use the fitment table below to check the complete application and option notes.

With more than 20 years of parts experience, PMB Performance can help compare your VIN and installed hardware with the required configuration. Include any suspension, wheel or axle changes.

Review Installation instructions for the complete installation and clearance requirements.