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Product details
Black lug-mount Dynapro calipers and plain-face rotors replace the hydraulic rear brakes at the specified Big Ford Bronco housing ends. An internal mechanical parking brake is supplied with the rotor assembly. Wilwood Engineering, founded in 1977 by Bill Wood, is based in Camarillo, California. The company designs and manufactures disc brake systems and supplies master cylinders, calipers, brake rotors, valves, fittings and lines for motorsport, street-performance and specialized installations. Select each component around the complete system’s requirements.
Technical Details
- Manufacturer part number: 140-13322
- Application and package: Rear Brake Kits - Street Performance; Rear Kits; Disc; Parking; Sold as a kit.
- 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 5.5 in; 5 x 139.7 mm
- Stud-hole / clearance provision: 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
- Rear axle-end interface: Big 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; Plain Face
Fitment & Compatibility
Measure the Big Ford flange, axle register and 2.36-inch offset before ordering. DS1017 identifies the 5 x 5.50-inch configuration; brake hoses and parking-cable hardware are separate requirements.
A maximum flange diameter of 6.61 inches and a 0.050-inch x 45-degree chamfer are specified for rotor clearance. The illustrated register is 2.88 inches; select the documented centering arrangement and match both axle offset and housing-end bolt pattern.
The installation reference identifies Big Ford Bronco rear applications with 3300-lb axle/11-inch drums for 1966–1975 and the listed 1976–1977 configurations. Verify the actual flange,2.36-inch offset and axle register.
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
- Wilwood exact kit specifications
- Wilwood installation instructions DS1017
- Axle measurement worksheet
Contact PMB Performance with the brake-kit identification and measurements for help selecting the part. Our team brings over 20 years of experience.
