Wilwood Front Red Six-Piston AERO6 Package for Mustang S550 (2015–2023) and Ridetech Spindles, 14-Inch Drilled Rotors

The red AERO6 configuration combines 14-inch drilled-and-slotted rotors with radial six-piston front calipers. Its separate hats retain the listed factory Mustang hub or the specifically identified Ridetech hub-spindle arrangement. 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: 140-13886-DR
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Minimum wheel guidance (clearance drawing required): 18 in; 457.2 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• Rotor Outside Diameter: 14.00 in; 355.6 mm
• Rotor Thickness: 1.25 in; 31.75 mm
• Rotor Material: Spec-37 Iron
• Surface Type: SRP Drilled & 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
• Pistons per service caliper: 6
• Service-caliper piston construction: Stainless
• Service-caliper mount: Radial
• Caliper body construction: Forged aluminum
• Caliper Color: Red
• Caliper Finish: Red Powder Coat
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: AERO6
• Pad compound: BP-10
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: Yes

Fitment & Compatibility

For factory S550 installations, use only the listed 2015–2023 Mustang trim and brake-package entries; do not assume Shelby GT350/GT500 coverage. Classic Falcon, Comet, F-100 and Mustang rows require the stated Ridetech hub spindle or SLA/hub-spindle conversion, not their original spindles. DS-1076 includes front flexlines 220-13912. The wheel barrel and spoke shape must clear the 14-inch assembly.

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.