Wilwood Front AERO6R/ST Road-Race Kit for Mustang S550 (2015–2023) and Listed Ridetech Spindles, 15-Inch GT Rotors

The AERO6R/ST front package is configured for dedicated road racing with Thermlock pistons and 15-inch GT rotors. Its anodized six-piston calipers and high-temperature pads require the listed S550 or specifically converted Ridetech hub arrangement. Bill Wood established Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and builds disc brake systems for motorsport, street-performance and specialized uses, including calipers, rotors, master cylinders, valves, fittings and brake lines. Each part must match the requirements of the whole braking arrangement.

Technical Details

• Manufacturer: Wilwood
• Manufacturer part number: 140-14290
• Kit classification: Front Brake Kits - Road Race
• Axle position: Front Kits
• Brake Type: Disc
• Selling unit: Sold as a kit.
• Recommended Use: Road Race kits contain high temperature racing pads. Extended low temperature use will cause premature rotor and pad wear.
• Minimum wheel guidance (clearance drawing required): 19 in; 482.6 mm
• Spindle Included: No
• Mounting Hardware Included: Yes
• Separate wheel hubs included: No
• 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: Plain
• Hat material: Aluminum
• Hat finish: Type III Anodize
• Hat offset dimension: 1.380 in
• Pistons per service caliper: 6
• Service-caliper piston construction: Thermlock
• Service-caliper mount: Radial
• Caliper body construction: Forged aluminum
• Caliper Color: Anodize
• Caliper Finish: Type III Anodize
• Caliper Inlet Port Diameter: 1/8-27 NPT
• Caliper family: AERO6
• Pad compound: BP-35
• Master Cylinder Included: No
• Brake Booster Included: No
• Brake Lines Included: No

Fitment & Compatibility

This AERO6R/ST package is for dedicated road racing on the specified S550 Mustang or Ridetech hub-spindle setup. Do not infer Shelby GT350/GT500 coverage from another Mustang trim. BP-35 high-temperature pads cause accelerated pad/rotor wear during prolonged low-temperature use. The rotor envelope must satisfy class rules and the 19-inch wheel template; front hose kit 220-13912 is separate, as stated in DS-1190.

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 brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.