Wilwood Front 14-Inch Slotted Brake Kit, Red AERO6 Calipers for S550 Mustang (2015–2023) and Ridetech Applications

Red AERO6 calipers and 14.00 by 1.25-inch slotted rotors form this front kit. The application list distinguishes standard S550 hubs from classic vehicles converted to the required Ridetech spindle. Wilwood Engineering is a Camarillo, California manufacturer founded by Bill Wood in 1977. Disc brake design and manufacturing extend across calipers, brake rotors, master cylinders, valves, fittings and brake lines. Parts for street-performance, specialized applications and motorsport must be selected to meet the requirements of the complete brake system.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-13886-R
• Kit classification: Front Brake Kits - Street Performance
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• 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-20
• Rotor Outside Diameter: 14.00 in; 355.6 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): 18 in; 457.2 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

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

Our team at PMB Performance has over 20 years of parts and fitment experience. The existing component number and brake-system details help us check the match.