Wilwood Red Dynalite Front Disc Conversion, Drilled Rotors, Mazda MX-5 Miata (2016–2023) and Fiat 124 Spider (2017)

MX-5 Miata and 124 Spider front brakes receive red Dynalite calipers, SRP rotors and hoses. Verify the listed trim and clearance inside the wheels. The conversion combines the caliper, pad and rotor configuration specified for this axle and mounting arrangement. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, Wilwood designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its product range includes brake rotors, calipers, master cylinders, valves, fittings and brake lines, selected individually to match the complete brake system.

Technical Details

• Flexline supply: Included; confirm correct routing and hard-line connection
• Installation hardware: Included; verify the installed fastener engagement
• Items not supplied: spindles, wheel hubs, master cylinder, brake booster
• Wilwood part number: 140-17937-DR
• Conversion type: front conversion kit; Sold as a kit.
• Caliper configuration: Forged Dynalite Internal; 4 pistons per caliper; Red Powder Coat
• Bracket-to-caliper mounting: Lug
• Pad compound selection: BP-10
• Caliper piston specification: Stainless
• Hydraulic inlet thread: 1/8-27 NPT
• Brake-rotor package: 11.75 × 0.81 inches; Iron; SRP Drilled & Slotted
• Wheel-diameter reference: 15 in; the complete wheel-clearance drawing determines fit
• Retained-axle rotor mounting pattern: 4 x 3.93 inches; this does not change the retained hub or axle wheel pattern

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

With over 20 years of experience in parts and fitment, PMB Performance can help compare this package with your installation. Provide the VIN, original brake package, axle position and wheel-clearance measurements for that review.

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