Wilwood Front Red-Caliper S197 Mustang Conversion (2005–2014), Superlite 6R with 13.06-Inch SRP Rotors

This red-caliper S197 package combines a 13.06-inch SRP rotor pair with the documented Mustang front mounting hardware. Drilled/slotted Spec-37 rotors bolt to separate hats, preserving the original hub interface. Wilwood Engineering’s disc brake systems and components serve motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977; it is based in Camarillo, California. Wilwood designs and manufactures brake rotors and calipers as well as master cylinders, valves, brake lines and fittings. Selecting compatible components is essential to the complete system.

Technical Details

• Manufacturer part number: 140-9109-DR
• Included pad compound: BP-10; pistons: stainless steel
• Caliper body: Forged aluminum; hydraulic inlet: 1/8-27 NPT
• Rotor surface finish: Black Electro Coat; rotors are not supplied burnished
• Rotor/hat wheel-stud clearance pattern(s): 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; the existing hub/axle pattern is retained
• Hat/rotor stud-hole clearance: 0.580 in; 14.73 mm; 0.520 in; 13.21 mm; this is not a wheel-stud thread designation
• Hydraulic hoses: not included; match the separate lines and fittings to the application
• Kit includes calipers, rotors and mounting hardware; replacement hubs and spindles are not included
• Not included: master cylinder and brake booster
• Wheel clearance: 17-inch wheels may fit; check the complete manufacturer caliper/rotor template
• Quantity: sold as one axle kit
• Service calipers: 6-piston Forged Narrow Superlite 6R; Red Powder Coat; radial mounting
• Brake rotors: 13.06 x 1.25 inches; Spec-37 Iron; SRP Drilled & Slotted; vented

Fitment & Compatibility

For the listed 2005–2014 Ford Mustang front applications with five-lug, stock-offset hubs. The table separates base, GT, Bullitt, Boss 302 and Shelby GT500 configurations by year. Confirm the exact factory package and wheel measurements before ordering.

DS520 describes the 13.06-inch conversion and notes that the original dust plates may need permanent removal for rotor clearance. Front flexline kit 220-9111 is separate and includes the replacement hose brackets; the factory bracket hardware is reused as instructed.

The table below gives the detailed vehicle coverage; match the individual entry and each referenced note.

Manufacturer Resources

• Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

With over 20 years of parts and fitment experience, PMB Performance can help review the intended brake installation. Provide your VIN, wheel measurements and any modified axle or spindle details when asking about compatibility.

Vehicle Applications

Application Notes

1. Front flexline kit 220-9111 is specified for this kit and is sold separately. Confirm fitting compatibility and hose routing for the vehicle.
2. Line kit included (manufacturer): None
3. Front line-kit reference: 220-9111