Wilwood Front Black AERO6 Kit, 15-Inch Rotors for S550 Mustang (2015–2023) and Specified Ridetech Hub Spindles

A larger 15-inch rotor distinguishes this black AERO6 front conversion from the 14-inch arrangement. The included six-piston calipers and flexlines must be installed on the specific Mustang or Ridetech hub configuration listed. From Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and their components. Founded by Bill Wood in 1977, it serves street-performance, motorsport and specialized applications with master cylinders, calipers, brake rotors, valves, fittings and brake lines. All components must suit the requirements of the complete system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-13887
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Rotor Outside Diameter: 15.00 in; 381 mm
• Rotor Thickness: 1.25 in; 31.75 mm
• Rotor Material: Spec-37 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: Black Electro Coat
• Hat material: Aluminum
• Hat finish: Black E-Coat
• Hat offset dimension: 1.380 in
• Minimum wheel guidance (clearance drawing required): 19 in; 482.6 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: Yes
• Pistons per service caliper: 6
• Service-caliper piston construction: Stainless
• Service-caliper mount: Radial
• Caliper body construction: Forged aluminum
• Caliper Color: Black
• Caliper Finish: Black Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: AERO6
• Pad compound: BP-20

Fitment & Compatibility

The 15-inch kit uses the listed S550 Mustang hub, or the explicitly identified Ridetech hub-spindle conversion on older Ford/Mercury vehicles. Match the exact trim and spindle entry; GT350/GT500 fitment is not established by the Mustang name. Front hose kit 220-13912 is included. Check the 19-inch wheel guidance against the supplied clearance drawing before choosing wheels.

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 has over 20 years of brake-parts experience. Send the installed component details if you need help checking this replacement.