Wilwood Bronco New Style rear 12.88-inch Superlite brake kit laid out with red calipers, slotted rotors, internal parking-shoe assemblies and mounting parts
Wilwood Bronco New Style rear 12.88-inch Superlite brake kit assembly example, showing a red caliper positioned over the slotted rotor and mounting hat
Wilwood Bronco New Style rear 12.88-inch Superlite brake kit laid out with red calipers, slotted rotors, internal parking-shoe assemblies and mounting parts
Wilwood Bronco New Style rear 12.88-inch Superlite brake kit assembly example, showing a red caliper positioned over the slotted rotor and mounting hat

Wilwood GT-Slotted Bronco Rear Kit with Red Superlite Calipers and Internal Parking Brake, New Style Axle Ends, 2.36-Inch Offset

SKU: 140-13665-R

$2,299.11 Sale
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Product details

The GT-slotted version gives the specified New Style Bronco axle a two-piece rear rotor package with red Superlite 4R calipers. Its mechanical parking shoes are separate from the hydraulic service calipers, and operate within the iron hat's drum surface. This is a Wilwood Engineering conversion package. Bill Wood founded the company in 1977, and it is based in Camarillo, California. Wilwood designs and manufactures disc brake systems and components, from calipers and brake rotors to master cylinders, valves, fittings and brake lines. Its motorsport, street-performance and specialized applications require each component to match the complete brake system.

Technical Details

  • Manufacturer: Wilwood; manufacturer part number: 140-13665-R. Supplied quantity: Sold as a kit.
  • Application category: Rear Brake Kits - Street Performance. Axle/spindle category: Rear Kits. Brake function: Disc; Parking.
  • Separate wheel hubs included: No. Retain only the hub arrangement specified for this kit.
  • Mounting hardware included: Yes. Spindles included: No. Master cylinder included: No. Brake booster included: No.
  • Flexible brake lines included: No. Select the vehicle-end connection and routing separately.
  • Internal parking-shoe assemblies are included. The vehicle cable/clevis connection is separate; parking cable kit 330-9371 is a separately selected option, not included.
  • Calipers: 4 stainless pistons per caliper; radial mounting; forged aluminium bodies. Color: Red. Finish: Red Powder Coat. Inlet thread: 1/8-27 NPT.
  • Caliper family: Forged Narrow Superlite 4R. Brake-pad compound: BP-10.
  • Wheel interface: 5 x 5.5 in; 5 x 139.7 mm. Rotor/hat wheel-stud clearance: 0.640 in; 16.26 mm.
  • Nominal minimum wheel diameter: 17 in; 431.8 mm. Verify the full wheel-clearance drawing; diameter alone does not establish barrel or spoke clearance.
  • Housing/spindle flange: Big Ford New Style Bronco. Flange/axle offset: 2.36 in; 59.94 mm.
  • Rotor: 12.88 in; 327.15 mm outside diameter; 1.10 in; 27.94 mm thickness. Material: Spec-37 Iron. Construction: Vented. Friction-face style: GT Slotted.
  • Rotor-hat material: Iron. Hat offset: 1.540 inches; this hat dimension is separate from axle offset.
  • Rotor surface finish: Black Electro Coat.

Fitment & Compatibility

Confirm housing flange, bearing diameter and 2.36-inch axle offset with the supplied diagram. Allow the required clearance around the nominal 12.88-inch rotors and verify wheel studs against the hat. Select the correct hydraulic lines and parking-brake cable/clevis connections separately.

Manufacturer Documents

Before ordering, PMB Performance can help assess the application using your vehicle and brake-system details. Over 20 years of parts and fitment experience informs that review.