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Product details
Plain vented discs keep the rotor face uninterrupted alongside red forged calipers. At the rear axle, this kit pairs red powder-coated 4-piston calipers and 12.19-inch plain-face rotors with the mounting hardware for Mopar 8-3/4 / Dana 60, 2.36-inch offset. Based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. It designs and manufactures disc brake systems for motorsport, street-performance and specialized applications, with a range including calipers, rotors, master cylinders, valves, fittings and brake lines. Selecting the mounting and hydraulic components together is part of building the complete brake system.
Technical Details
- Manufacturer part number: 140-5591-R.
- Rotor dimensions: 12.19 in; 309.63 mm diameter x 0.81 in; 20.57 mm thick.
- Rotor construction: Iron; vented; Plain Face friction surface.
- Housing/flange arrangement: Mopar/Dana.
- Axle flange offset: 2.36 in; 59.94 mm.
- Wheel-size guide: 15 in; 381 mm minimum nominal diameter; verify actual template clearance.
- Calipers: 4 pistons; forged aluminum; stainless steel pistons.
- Caliper attachment: lug mount; 1/8-27 NPT hydraulic inlet.
- Caliper finish: Red Powder Coat.
- Rotor/hat wheel-stud clearance patterns: 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.
- Rotor/hat stud-hole clearance diameters: 0.520 in; 13.21 mm. These are hole sizes, not wheel-stud thread specifications.
- The rotor/hat drilling does not change the vehicle hub or axle wheel bolt pattern.
- Sold as one kit. Mounting hardware is included. Hubs are not included.
- Brake pads are included; use the compound and installation instructions specified for this rotor package.
- Spindles, master cylinder, brake booster and hydraulic brake lines are not included.
Package and installation requirements
- No parking brake is included. Wilwood describes this package for applications that do not require a separate parking brake, including custom and competition installations.
Fitment & Compatibility
This kit mounts to Mopar 8-3/4-inch or Dana 60 rear housing ends with a 2.36-inch axle offset and the specified non-adjustable snap-ring axle bearings. Wilwood identifies Green MO400, Strange A1022 and Moser 9400M bearing arrangements in the installation instructions. Identify the housing end and measure the axle offset before ordering; the differential name alone is insufficient.
Wheel selection requires the complete clearance profile in the instructions. Confirm radial and spoke clearance; do not rely on the minimum diameter alone.
Manufacturer references
PMB Performance has more than 20 years of experience helping customers select brake components. Share the measurements and photos of your current setup so we can help check the application and the additional pieces needed.
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.