Wilwood Front SRP Brake and Hose Kit, Black Dynalite Calipers, Mazda MX-5 Miata (2016–2023) and Fiat 124 Spider (2017)

Drilled front rotors and black calipers serve specified MX-5 Miata and 124 Spider brakes. Check the factory caliper package and actual wheel profile. The conversion combines the caliper, pad and rotor configuration specified for this axle and mounting arrangement. Wilwood Engineering designs and manufactures disc brake systems from its base in Camarillo, California. Bill Wood founded the company in 1977. Its range of calipers, brake rotors, master cylinders, valves, fittings and brake lines serves motorsport, street-performance and specialized applications; each part must suit the requirements of the complete braking system.

Technical Details

• Wilwood manufacturer number: 140-17937-D
• Kit function and position: front conversion kit; Sold as a kit.
• Caliper family, piston count and finish: Forged Dynalite Internal; 4 pistons per caliper; Black Powder Coat
• Mount arrangement: Lug
• Supplied brake-pad material: BP-10
• Caliper piston construction: Stainless
• Caliper fluid connection: 1/8-27 NPT
• Rotor diameter, width, material and face: 11.75 × 0.81 inches; Iron; SRP Drilled & Slotted
• Nominal wheel diameter starting point: 15 in; the complete wheel-clearance drawing determines fit
• Hat drilling for retained axle flange: 4 x 3.93 inches; this does not change the retained hub or axle wheel pattern
• Brake-hose provision: Included; confirm correct routing and hard-line connection
• Supplied installation fasteners: Included; verify the installed fastener engagement
• Components outside the kit: spindles, wheel hubs, master cylinder, brake booster

Fitment & Compatibility

Applies to the listed 2016–2023 Mazda MX-5 Miata trims, with RF coverage beginning in 2017, and the 2017 Fiat 124 Spider Classica and Lusso entries. GS, GT, GX and RF derivatives retain their individual year limits in the table below. Confirm the installed front brake package, retained hub, 4 × 100 mm nominal mounting arrangement and full wheel profile; the 4 × 3.93-inch catalog drilling is the rotor/hat interface. Follow DS-1621 for caliper centering and supplied hose routing.

Wilwood product specifications · Wilwood installation and compatibility information · Wilwood installation and compatibility information

Before purchase, send PMB Performance the VIN, original brake package, axle position and wheel-clearance measurements. Our over 20 years of parts and fitment experience helps identify the installation details that need to be checked.

Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.