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Product details
This rear drag-brake package uses drilled solid-steel rotors and Type III anodized Dynalite calipers for the specified Mopar/Dana axle arrangement. The nonadjustable snap-ring bearing and 2.50-inch offset are critical; a different bearing-retainer style is not interchangeable. 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: 140-8853-D
- Service calipers: 4-piston Forged Dynalite Internal; Type III Anodize; lug mounting
- Brake rotors: 11.44 x 0.35 inches; Steel; Drilled; solid
- Included pad compound: BP-10; pistons: stainless steel
- Caliper body: Forged aluminum; hydraulic inlet: 1/8-27 NPT
- Rotor surface finish: Black Oxide; 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: none included; solid-rotor service-brake package
- 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: 15-inch wheels may fit; check the complete manufacturer caliper/rotor template
- Quantity: sold as one axle kit
Fitment & Compatibility
For Mopar 8-3/4 and Dana 60 rear assemblies with a 2.50-inch axle offset and the specified nonadjustable snap-ring bearing arrangement. DS500 identifies Mopar MO400, Strange A1022 and Moser 9400M-type bearings. The RP400 pressed-on five-hole retainer style is not compatible.
The caliper bracket replaces the separate bearing retainer in the documented assembly. Check the housing pattern, 3.06-inch hat center and axle-flange limit of 6.25 inches with the specified chamfer. This is a solid-rotor service-brake package without a parking brake; hydraulic lines are separate.
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.
