Wilwood Rear GT Rotor & Red Caliper Package for Small Ford, 12.88 Inches with 2.50-Inch Axle Offset

The red GT configuration supplies 12.88-inch slotted rotors for the documented Small Ford axle ends. Internal parking-brake backing plates and bearing retainers are included for the 2.50-inch-offset installation, while the vehicle's control connections remain separate. Founded in 1977 by Bill Wood and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications. Its range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines, selected to work together within a properly matched brake system.

Technical Details

• Manufacturer part number: 140-9220-R
• 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; 5 x 5 in; 5 x 127 mm; the existing hub/axle pattern is retained
• Hat/rotor stud-hole clearance: 0.520 in; 13.21 mm; this is not a wheel-stud thread designation
• Required axle offset: 2.50 inches; measure from the axle flange to the housing flange as shown in the instructions
• Parking brake: internal drum/shoe assemblies included; cable, clevis and control hardware are separate
• 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: 4-piston Forged Narrow Superlite 4R; Red Powder Coat; radial mounting
• Brake rotors: 12.88 x 1.10 inches; Spec-37 Iron; GT Slotted; vented
• Included pad compound: BP-10; pistons: stainless steel

Fitment & Compatibility

Choose the red GT package only after the Small Ford flange and 2.50-inch axle offset have been confirmed. DS530 governs bearing retention and the included parking-backplate installation. Its rotor hats locate at 3.06 inches or at 2.80 inches with the supplied register ring. Verify the 6.61-inch axle-flange/chamfer restriction, then arrange suitable hydraulic lines and parking-cable controls. The generic model entry below does not establish compatibility with an unchanged factory axle.

Review the complete fitment table below before purchase, retaining the restrictions attached to the chosen vehicle.

Adjust and test the mechanical parking brake as directed. Cable routing, tension and shoe adjustment affect its holding ability; do not rely on an untested parking brake alone to secure the vehicle on a slope.

Manufacturer Resources

• Wilwood kit specifications and wheel-clearance information
• Installation instructions and component list
• Axle-offset measurement worksheet

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.

PMB Performance brings over 20 years of experience with brake components and fitment details. Send us your VIN together with the installed axle, spindle, brake and wheel specifications if you need help confirming this package.

Vehicle Applications

Application Notes

1. Line kit included (manufacturer): None