Wilwood Front Brake Kit with Red Calipers and Plain Rotors, Mazda MX-5 Miata (2016–2023) and Fiat 124 Spider (2017)

Choose red four-piston front brakes and plain rotors for listed MX-5 Miata and 124 Spider models. Confirm the original hub and wheel envelope. The conversion combines the caliper, pad and rotor configuration specified for this axle and mounting arrangement. From Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Founded in 1977 by Bill Wood, the company produces calipers, brake rotors, master cylinders, valves, fittings and brake lines. Component selection depends on the requirements of the complete braking system.

Technical Details

• Rotor diameter, width, material and face: 11.75 × 0.81 inches; Iron; Plain Face
• 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
• Wilwood manufacturer number: 140-17937-R
• Kit function and position: front conversion kit; Sold as a kit.
• Caliper family, piston count and finish: Forged Dynalite Internal; 4 pistons per caliper; Red Powder Coat
• Mount arrangement: Lug
• Supplied brake-pad material: BP-10
• Caliper piston construction: Stainless
• Caliper fluid connection: 1/8-27 NPT

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

For help matching the brake assembly, contact PMB Performance with the VIN, original brake package, axle position and wheel-clearance measurements. We have over 20 years of experience working through parts and fitment details.

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