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Product details
This red/plain-disc assembly is for the specified non-adjustable-bearing rear axle. The Forged Dynalite rear disc and parking-brake kit is supplied with red powder-coated 4-piston calipers and 12.19-inch plain-face rotors for Mopar 8-3/4 / Dana 60, snap-ring bearings. Since Bill Wood founded the company in 1977, Camarillo, California-based Wilwood Engineering has designed and manufactured disc brake systems for motorsport, street-performance and specialized applications. Its components include calipers, rotors, master cylinders, valves, fittings and brake lines; all must be matched to the intended brake system.
Package and installation requirements
- The one-piece iron drum/rotors incorporate the parking-brake drums; the internal shoes provide a mechanical parking brake independently of the four-piston service calipers.
- Parking-brake cables and hydraulic brake lines are separate. Wilwood references universal cable kit 330-9371; installation can require cable or vehicle modifications.
- Use the non-adjustable snap-ring bearing arrangement specified by Wilwood; confirm the bearing before ordering.
Technical Details
- Manufacturer part number: 140-7144-R.
- 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.
- 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.
- 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: 0.52 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.
- Calipers: 4 pistons; forged aluminum; stainless steel pistons.
- Caliper attachment: lug mount; 1/8-27 NPT hydraulic inlet.
- Caliper finish: Red Powder Coat.
Fitment & Compatibility
Select this rear package for Mopar 8-3/4-inch or Dana 60 ends with the specified non-adjustable snap-ring bearings and a 2.36-inch axle offset. The bearing requirement is essential; a differential name is not a substitute for checking axle retention. Use DS424 to compare the end, bearing and bracket stack before ordering. No vehicle-model fitment is implied for every axle carrying these differential names. Unlike a rear-disc package without a parking mechanism, this kit incorporates drum sections and internal mechanical shoes for that function. A cable installation must still be planned and checked for full release as well as holding operation. Hydraulic hose routing, wheel clearance and compatibility with the vehicle’s master cylinder remain part of the complete brake conversion.
Measure clearance at both the caliper and rotor using the instruction-sheet drawing. Wheels with the same nominal diameter can have different internal profiles.
Manufacturer references
Bring your vehicle and brake-system questions to PMB Performance. With over 20 years of experience, we can help identify the measurements and installation details that determine the correct kit.
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.
