Wilwood Front Dynapro Radial Pro-Street Kit, 12.88-Inch Slotted Rotors for S550 Mustang (2015–2023)/Ridetech Hubs

This Dynapro radial front kit uses 0.81-inch-thick vented iron rotors. The 12.88-inch GT-slotted package must match the listed Mustang or specifically converted Ridetech hub-spindle setup. Founded in 1977 under Bill Wood, Wilwood Engineering operates from Camarillo, California. The company designs and manufactures disc braking systems and components, including calipers, master cylinders, brake rotors, fittings, valves and brake lines. Its motorsport, specialized and street-performance range requires individual parts matched to the complete braking arrangement.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-14103
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• 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
• 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
• Rotor Outside Diameter: 12.88 in; 327.15 mm
• Rotor Thickness: 0.81 in; 20.57 mm
• Rotor Material: Iron
• Surface Type: GT Slotted
• Rotor construction: Vented
• 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: Plain
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset dimension: 1.380 in

Fitment & Compatibility

Use the stated S550 Mustang application or the specific Ridetech hub-spindle/SLA conversion on older Ford and Mercury models. This Pro-Street configuration uses 0.81-inch vented iron rotors; confirm the vehicle's intended use and installed hub. Front flexlines are separate, with 220-13912 referenced for the appropriate Mustang installation. Do not extend the listed trims to GT350/GT500, and confirm clearance with the wheel drawing.

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

Contact PMB Performance with the brake-kit identification and measurements for help selecting the part. Our team brings over 20 years of experience.