Wilwood Front Six-Piston 12.88-Inch GT Brake Conversion for 2016–2023 Mazda MX-5 Miata and 2017 Fiat 124 Spider, Black Dynapro 6

Six-piston Dynapro 6 calipers and 12.88-inch GT-slotted rotors define this front Mazda/Fiat conversion. The black calipers, vented iron rotors and application-specific hats must clear the actual wheel and match the listed hub. Wilwood Engineering designs and builds disc brake systems in Camarillo, California. Bill Wood established the company in 1977; it supplies brake rotors, calipers, master cylinders, valves, fittings and lines for specialized applications, street performance and motorsport. The complete brake system determines which individual components are appropriate.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-14234
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Rotor Outside Diameter: 12.88 in; 327.15 mm
• Rotor Thickness: 0.81 in; 20.57 mm
• Rotor Material: Iron
• Surface Type: GT Slotted
• Rotor construction: Vented
• Bolt Circle Diameter: 4 x 3.93 in; 4 x 99.82 mm
• Catalog stud / mounting-hole reference: 0.520 in; 13.21 mm
• Rotor surface finish: Black Electro Coat
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset dimension: 0.550 in
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: Yes
• Minimum wheel guidance (clearance drawing required): 17 in; 431.8 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• Pistons per service caliper: 6
• Service-caliper piston construction: Stainless
• Service-caliper mount: Lug
• Caliper body construction: Forged aluminum
• Caliper Color: Black
• Caliper Finish: Black Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: Dynapro 6
• Pad compound: BP-10

Fitment & Compatibility

Match the listed MX-5 Miata or Fiat 124 Spider hub, year and trim, with only the stated 2017 Classica/Lusso coverage for the Fiat. The six-piston 12.88-inch package has 17-inch minimum-wheel guidance and needs the full wheel-clearance check. DS-1177 includes line kit 220-12948 and registration rings; verify the actual hose route and centering of the rotor hat.

Listed models: MX-5 Miata; 124 Spider. Use the fitment table below for the individual years, submodels and equipment conditions.

Wilwood product specifications · Installation instructions

With more than 20 years of parts and fitment experience, PMB Performance can help compare the existing brake assembly with the required component.