Wilwood rear Forged Dynalite Internal brake kit for BOP 12.19-inch staggered layout: Red-finish caliper pair with undrilled, with short machined face grooves rotors, internal drum parking-brake assemblies, brackets, pads, registration rings and fasteners.
Wilwood rear Forged Dynalite Internal brake kit for BOP 12.19-inch staggered layout: Assembled rear brake showing a red-finish Forged Dynalite Internal caliper, undrilled, with short machined face grooves rotor and deep parking-drum center.
Wilwood rear Forged Dynalite Internal brake kit for BOP 12.19-inch staggered layout: Red-finish caliper pair with undrilled, with short machined face grooves rotors, internal drum parking-brake assemblies, brackets, pads, registration rings and fasteners.
Wilwood rear Forged Dynalite Internal brake kit for BOP 12.19-inch staggered layout: Assembled rear brake showing a red-finish Forged Dynalite Internal caliper, undrilled, with short machined face grooves rotor and deep parking-drum center.

Wilwood Rear 12.19-Inch Rotor Kit with Red Dynalite Internal Calipers for BOP 2.75-Inch Bearing Axles, Plain

SKU: 140-16989-R

$1,132.36 Sale
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Product details

This staggered rear brake conversion combines four-piston Dynalite Internal service calipers with 12.19-inch rotors and internal drum parking-brake assemblies. The axle interface is the BOP 2.75-inch bearing flange with a 2.75-inch axle offset. Red calipers and 12.19-inch plain face rotors are the selected configuration. Based in Camarillo, California, Wilwood Engineering was established by Bill Wood in 1977. Its disc brake systems serve motorsport, street-performance and specialized applications. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are matched to the requirements of the whole system.

Technical Details

  • Manufacturer part number: 140-16989-R. One kit for the documented axle/application.
  • Rotors: 12.19-inch outside diameter × 0.81-inch thickness, plain faces, Iron material.
  • Calipers: Forged Dynalite Internal, 4 pistons, stainless piston material. Lug mount and red powder coat finish.
  • Published piston bores: 1.38, 1.38 inches. Included pads: BP-10.
  • Matching existing wheel hubs are retained; replacement hubs are not included.
  • Hydraulic inlet: 1/8-27 NPT.
  • Nominal wheel minimum: 15 inches; verify the complete caliper profile against the wheel drawing.
  • Flexlines are not included. Choose the required hydraulic hoses and adapters separately.
  • Drum parking-brake assemblies are included inside the rotor hats. Supply parking cables, cable hardware/adapters and hydraulic hoses/fittings separately.
  • Pads and mounting hardware are included. Spindles, master cylinder and brake booster are separate.

Fitment & Compatibility

Measure the rear axle before choosing the Dynalite package: the required BOP bearing flange is 2.75 inches, axle offset is 2.75 inches, and the bracket set is staggered for the corresponding shock arrangement. DS-1530 identifies the 1964–1970 Buick/Oldsmobile/Pontiac axle family without establishing a particular model here. The axle flange may be no larger than 6.61 inches with the documented chamfer. Check rotor register and 1/2-inch stud holes; smaller factory studs may need a machine-shop conversion. Cables, cable fittings/adapters and hydraulic hoses/fittings are separate purchases.

PMB Performance has 20+ years of experience with parts and fitment details. Share your current brake setup, intended use and mounting measurements so we can help check the complete installation.

Manufacturer documentation: Installation instructions; Technical bulletin.

Manufacturer Warning

Applicable to brake pads only: Wilwood warns of exposure to arsenic, cadmium, hexavalent chromium compounds, lead, nickel, cobalt and antimony trioxide, chemicals known to California to cause cancer or reproductive harm. More information:

P65Warnings.ca.gov.