Wilwood Front Dynapro Radial Drag-Race Kit, Drilled 12.90-Inch Rotors for S550 Mustang (2015–2023) and Listed Ridetech Hubs

This front Dynapro radial kit is configured for drag racing with 12.90-inch drilled solid-steel rotors. The thin 0.38-inch rotor package reduces rotating mass for its competition purpose and is not a street-brake conversion. Bill Wood’s 1977 founding of Wilwood Engineering began a disc brake design and manufacturing business based in Camarillo, California. The range includes master cylinders, calipers, rotors, brake lines, valves and fittings for motorsport, street-performance and specialized vehicles. Component selection must consider the complete braking arrangement.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-14100-D
• Kit classification: Front Brake Kits - Drag Race
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Rotor Outside Diameter: 12.90 in; 327.66 mm
• Rotor Thickness: 0.38 in; 9.65 mm
• Rotor Material: Steel
• Surface Type: Drilled
• Rotor construction: Solid
• Bolt Circle Diameter: 5 x 4.5 in; 5 x 114.3 mm
• Catalog stud / mounting-hole reference: 0.630 in; 16.00 mm
• Rotor surface finish: Black Electro Coat
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset dimension: 1.380 in
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No
• 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: 4
• Service-caliper piston construction: Stainless
• Service-caliper mount: Radial
• Caliper body construction: Billet aluminum
• Caliper Color: Anodize
• Caliper Finish: Type III Anodize
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: Dynapro radial
• Pad compound: BP-20

Fitment & Compatibility

This is a drag-racing-only configuration, not recommended for street use. Match the listed S550 Mustang hub or the stated Ridetech conversion on the older Falcon, Comet, Mustang and F-100 applications; no GT350/GT500 coverage is established. The 0.38-inch solid rotor has a different heat capacity from a vented street rotor. Front flexlines, including the referenced 220-13912 where appropriate, are supplied separately; verify the 17-inch wheel diagram.

Listed models: Falcon; Comet; Mustang; F-100. Use the fitment table below for the individual years, submodels and equipment conditions.

Wilwood product specifications · Installation instructions

PMB Performance can help identify the required brake component with over 20 years of parts experience. Send the kit details and original-part measurements.