Wilwood Small Ford Bronco 2.36-inch-offset rear parking-brake parts layout with black Dynapro lug-mount calipers, 12.19-inch drilled-and-slotted rotors, internal drum parking-brake assemblies, pads and mounting hardware
Wilwood Small Ford Bronco rear parking-brake single-side assembly with a black Dynapro Lug Mount caliper beside the drilled-and-slotted rotor
Wilwood Small Ford Bronco 2.36-inch-offset rear parking-brake parts layout with black Dynapro lug-mount calipers, 12.19-inch drilled-and-slotted rotors, internal drum parking-brake assemblies, pads and mounting hardware
Wilwood Small Ford Bronco rear parking-brake single-side assembly with a black Dynapro Lug Mount caliper beside the drilled-and-slotted rotor

Wilwood Black Rear Dynapro Conversion with SRP Rotors and Parking Brake, Bronco Small Ford Axles with 2.36-Inch Offset

SKU: 140-13320-D

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Product details

The drilled-and-slotted rear configuration uses black lug-mount Dynapro calipers and an internal parking brake. Rotor-pattern choices listed for this SRP version must be checked independently of the plain-rotor option. Wilwood Engineering designs and builds disc brake systems in Camarillo, California. Bill Wood established the company in 1977; it supplies brake rotors, calipers, master cylinders, valves, fittings and lines for specialized applications, street performance and motorsport. The complete brake system determines which individual components are appropriate.

Technical Details

  • Manufacturer part number: 140-13320-D
  • Application and package: Rear Brake Kits - Street Performance; Rear Kits; Disc; Parking; Sold as a kit.
  • Rear axle-end interface: Small Ford Bronco; axle/flange offset 2.36 in; 59.94 mm
  • Included mechanical components: Mounting hardware: Yes; hub(s): No; spindle(s): No
  • Hydraulic components supplied: Master cylinder: No; brake booster: No; brake lines: No
  • Specified pad compound: BP-10
  • Rotor dimensions: 12.19 in; 309.63 mm outside diameter; 0.81 in; 20.57 mm thickness
  • Rotor construction: Iron; Vented; SRP Drilled & Slotted
  • Caliper assembly: Dynapro Lug Mount; 4 pistons per caliper; Forged Aluminium body; Lug mount
  • Piston and finish specification: Stainless pistons; Black calipers; Black Powder Coat
  • Hydraulic inlet: 1/8-27 NPT
  • Wheel bolt pattern(s): 5 x 4.5 in; 5 x 114.3 mm; 5 x 5.5 in; 5 x 139.7 mm
  • Stud-hole / clearance provision: 0.56 in; 14.22 mm; 0.64 in; 16.26 mm; diameter provision, not a thread designation
  • Wheel diameter starting requirement: 15 in; 381 mm; verify the individual wheel against the installation drawing

Fitment & Compatibility

Measure the Small Ford Bronco housing end and 2.36-inch offset before selecting this kit. Check the actual axle pattern against the documented rotor provisions, then obtain compatible hoses and parking cables.

In addition to the bracket pattern and measured offset, inspect the axle flange profile. Its outside diameter may not exceed 6.61 inches and it requires the documented 0.050-inch x 45-degree chamfer. The instructions show a 2.88-inch axle register with the applicable centering provision.

The installation reference identifies Small Ford Bronco rear applications with 2700-lb axle/10-inch drums for 1966–1973 and 2900-lb axle/10-inch drums for 1974–1975. The measured2.36-inch offset and actual housing flange still govern selection.

Hydraulic hoses/fittings and parking-brake cables, adapters and cable hardware are not included. Choose a compatible cable arrangement for the internal parking brake; universal cable systems may require vehicle or cable modifications.

Manufacturer References

PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.