Wilwood Front Dynapro 6 Brakes in Black, Mazda MX-5 Miata (2016–2023) and Fiat 124 Spider (2017), Drilled/Slotted 12.88-Inch Rotors

This black Dynapro front kit pairs six-piston calipers with drilled-and-slotted 12.88-inch rotors. It is the larger rotor package for the specified MX-5/124 hub arrangement, requiring an individual wheel-clearance check. Founded by Bill Wood in 1977, Wilwood Engineering designs and manufactures disc brake systems from Camarillo, California. Its calipers, brake rotors, master cylinders, valves, fittings and brake lines serve motorsport, street-performance and specialized applications. Individual components must be selected for the complete brake system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-14234-D
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• 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
• 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
• Rotor Outside Diameter: 12.88 in; 327.15 mm
• Rotor Thickness: 0.81 in; 20.57 mm
• Rotor Material: Iron
• Surface Type: SRP Drilled & 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

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

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