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Product details
Mopar/Dana rear kit with black Wilwood calipers and plain rotors. Verify the press-on five-hole RP400 bearing arrangement and 2.36-inch offset. The manufacturer is Wilwood Engineering of Camarillo, California, established in 1977 by Bill Wood. It designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and lines for motorsport, street-performance and specialized vehicles; suitability depends on the full brake-system configuration.
Technical Details
- Manufacturer part number: 140-2117-B
- Axle arrangement: Mopar/Dana housing end with the press-on five-hole flange-bearing layout identified in DS-126; the nominal axle offset is 2.36 inches (59.94 mm).
- Service-brake calipers: Black powder-coated forged aluminum, four stainless pistons per caliper, lug mounting and 1/8-27 NPT fluid inlets.
- Rotors supplied: Vented iron with plain friction faces; 12.19-inch outside diameter and 0.81-inch running width.
- Hat clearance drilling: 5 x 4.50, 5 x 4.75 and 5 x 5.00 inches (114.3, 120.65 and 127 mm bolt circles); confirm the installed axle and wheel drilling separately.
- Wheel requirement: Wilwood lists a nominal 15-inch minimum. Compare the complete wheel profile with the installation drawing.
- Package contents: Mounting hardware is included. Hubs, spindles, flexible brake lines, master cylinder and booster are not included.
- Parking-brake provision: This package supplies rear service brakes without a parking mechanism.
Fitment & Compatibility
Match DS-126, which identifies the press-on five-hole flange bearing as Mopar RP400. Do not substitute the separate snap-ring-bearing kit solely because its nominal offset is also 2.36 inches. Verify housing-end dimensions, axle offset, wheel drilling and flexible-line routing.
Manufacturer Documents
Wilwood kit specifications and component list
Manufacturer Warning
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 parts and fitment experience. Send the installed brake and axle details for help confirming the correct configuration.