Wilwood Six-Piston Front GT Rotor Conversion for Mazda MX-5 Miata, Black Dynapro Calipers

This Miata front package uses black six-piston Dynapro calipers with 11-inch slotted rotors. Separate aluminum hats attach to compatible original hubs, with BP-10 pads specified for this caliper configuration. From Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and their components. Founded by Bill Wood in 1977, it serves street-performance, motorsport and specialized applications with master cylinders, calipers, brake rotors, valves, fittings and brake lines. All components must suit the requirements of the complete system.

Technical Details

• Manufacturer part number: 140-13380
• Application and package: Front Brake Kits - Street Performance; Front Kits; Disc; Sold as a kit.
• Caliper assembly: Dynapro 6; 6 pistons per caliper; Forged Aluminium body; Lug mount
• Piston and finish specification: Stainless pistons; Black calipers; Black Powder Coat
• Hydraulic inlet: 1/8-27 NPT
• Wheel bolt pattern(s): 4 x 3.93 in; 4 x 99.82 mm
• Stud-hole / clearance provision: 0.500 in; 12.70 mm; diameter provision, not a thread designation
• Wheel diameter starting requirement: 15 in; 381 mm; verify the individual wheel against the installation drawing
• Included mechanical components: Mounting hardware: Yes; hub(s): No; spindle(s): No
• Hydraulic components supplied: Master cylinder: No; brake booster: No; brake lines: No
• Specified pad compound: BP-10
• Separate rotor-hat specification: Aluminum; Black E-Coat; offset 0.750 inch; part 170-11682
• Rotor dimensions: 11.00 in; 279.4 mm outside diameter; 0.81 in; 20.57 mm thickness
• Rotor construction: Spec-37 Iron; Vented; GT Slotted

Fitment & Compatibility

Use the exact production-year and sports-suspension row, including both 2001 VIN groups. DS1022's family heading starts earlier than the application list; verify the actual early-year installation rather than inferring blanket coverage.

Documented model groups, subject to each year, submodel and spindle/axle qualification: Mazda Miata. Application distinctions include All except Sports Suspension; w/ Sports Suspension from VIN 206467; w/ Sports Suspension to VIN 206466; w/ Sports Suspension.

The application list covers 1991–1997 and 1999–2000, plus 2001–2005 with the stated sports-suspension qualifications. The 2001 sports-suspension rows split at VIN 206466/206467; do not collapse these into an unsupported 1990–2005 direct-fit claim.

Flexible brake lines are not included. Original lines are not assumed to connect to the Wilwood calipers; select the application-specific or correctly sized universal hose and matching fittings.

Manufacturer References

• Wilwood exact kit specifications
• Wilwood installation instructions DS1022

For fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.

Review the complete application table below with the year, submodel and installation qualifications above.