Wilwood Red Rear Dynalite Kit, Plain 12.19-Inch Rotors and Electric Parking Brake, Big Ford Bronco Flange at 2.36-Inch Offset

Plain rotors and red four-piston service calipers make this the undrilled Big Ford Bronco rear option. Electric parking units and their controller provide the holding function, while the installer must supply suitable hydraulic hoses and verify the 2.36-inch offset. Wilwood Engineering began in 1977 under founder Bill Wood and is based in Camarillo, California. It designs and manufactures disc braking equipment for motorsport, specialized applications and street-performance vehicles. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form part of the range and must match the requirements of the complete system.

Technical Details

• Manufacturer part number: 140-16138-R; supplied as one rear axle brake kit.
• Rotor material and surface: Iron; vented; Plain Face; surface finish Plain.
• Parking-brake package: Two separate electric parking calipers, control unit, switch with pigtail and universal wiring harness included; vehicle electrical connections require installation.
• Hydraulic installation: Hydraulic lines and fittings are separate and must be selected for the vehicle; master cylinder not included; brake booster not included.
• Hydraulic service calipers: Forged Dynalite Internal; 4 pistons per caliper; Forged Aluminium body; lug mounting; Stainless pistons.
• Rotor dimensions: 12.19 in; 309.63 mm outside diameter; 0.81 in; 20.57 mm thick.
• Mechanical contents: Separate wheel hubs are not included; mounting hardware supplied; spindles not included.
• Rear axle interface: Big Ford Bronco housing flange; 2.36 in; 59.94 mm axle offset. Measure the installed assembly.
• Supplied service pads: BP-10 compound; verify suitability for the intended operating conditions.
• Cataloged rotor/hat mounting-hole pattern: 5 x 5.5 in; 5 x 139.7 mm bolt circle; cataloged stud-hole clearances 0.64 in; 16.26 mm. The existing hub or axle flange determines the vehicle wheel pattern and stud specification. These rotor/hat drillings do not convert that pattern.
• Minimum nominal wheel diameter: 15 in; 381 mm; full spoke/barrel clearance must be checked using the installation drawing.
• Caliper finish and port: Red Powder Coat; hydraulic inlet 1/8-27 NPT.

Fitment & Compatibility

This kit is selected for Big Ford Bronco geometry at 2.36 inches of axle offset. Wheel-stud pattern and register dimensions must match the supplied rotors or hats, and the parking motors and harness connectors need clearance throughout suspension travel. Compare the intended 15-inch or larger wheel with the installation drawing. DS1411 identifies the 1966–1977 Ford Bronco 11 x 1.75-inch drum axle; choose this kit’s specific offset, not the alternative shown in the same manual.

Review the fitment table below after identifying the rear axle. Confirm housing-flange dimensions, retention hardware, offset, register and wheel pattern against the kit drawing. For a 1990 Lincoln Town Car, identify the actual axle and confirm the specified interface; do not select this conversion from model and year alone.

The EPB is a parking-hold system, not an emergency stopping brake. It includes a separate left/right motor-driven caliper pair, control unit, switch with pigtail and universal wiring harness. Vehicle power, ground, ignition/accessory connections and protected cable routing must be installed to DS1353; it is not a plug-in factory-harness replacement.

PMB Performance brings more than 20 years of parts experience to fitment questions. Share the vehicle details and the installed axle, spindle and wheel measurements so we can help review the conversion.

Review the Installation instructions, Technical bulletin, EPB mounting and wiring instructions before selecting hardware or checking wheel clearance.

Manufacturer Warning

Applicable to brake pads only. 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.