{"product_id":"wilwood-140-16989-d","title":"Wilwood Rear Black Dynalite Internal Brake Conversion for BOP 2.75-Inch Bearing Axles, 12.19-Inch Drilled\/Slotted Rotors","description":"\u003cp\u003eBlack calipers and 12.19-inch SRP drilled \u0026amp; slotted rotors are the selected configuration. 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. Wilwood Engineering, founded in 1977 by Bill Wood, is based in Camarillo, California. The company makes disc brake systems and components for motorsport, street-performance and specialized applications, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Each component must suit the surrounding brake system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eProduct identification: Wilwood 140-16989-D. Package quantity: one kit for the stated configuration.\u003c\/li\u003e\n\u003cli\u003eThe brake package includes pads and required mounting hardware, excluding spindles, master cylinder and booster.\u003c\/li\u003e\n\u003cli\u003eDrum parking-brake assemblies are included inside the rotor hats. Supply parking cables, cable hardware\/adapters and hydraulic hoses\/fittings separately.\u003c\/li\u003e\n\u003cli\u003eHydraulic line selection is a separate purchase. Check hose length, adapters and routing before assembly.\u003c\/li\u003e\n\u003cli\u003eCheck the wheel-clearance diagram before purchase; the nominal minimum wheel diameter is 15 inches.\u003c\/li\u003e\n\u003cli\u003eConnect the hydraulic line through the 1\/8-27 NPT caliper inlet.\u003c\/li\u003e\n\u003cli\u003eThis assembly leaves the documented wheel hubs in use. It supplies brake components rather than new hubs.\u003c\/li\u003e\n\u003cli\u003ePiston sizing follows the published 1.38, 1.38-inch specification. The included brake-pad compound is BP-10.\u003c\/li\u003e\n\u003cli\u003eCaliper selection is 4-piston Forged Dynalite Internal. Body finish: black powder coat; attachment: lug; piston material: stainless.\u003c\/li\u003e\n\u003cli\u003eRotor package uses SRP Drilled Rotor \u0026amp; Hat components. Each is 0.81 inch thick with 12.19-inch diameter and SRP drilled \u0026amp; slotted faces. Published material: Iron.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eMeasure 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.\u003c\/p\u003e\u003cp\u003eFor help selecting the correct brake package, give PMB Performance the vehicle details and measurements of the installed hardware. Our 20+ years of parts experience help resolve fitment beyond a model name alone.\u003c\/p\u003e\u003cp\u003eManufacturer documentation: \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1530.pdf\"\u003eInstallation instructions\u003c\/a\u003e; \u003ca href=\"https:\/\/www.wilwood.com\/Images\/BrakeKits\/Axle-Offset-Worksheet-Wilwood.pdf\"\u003eTechnical bulletin\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eManufacturer Warning\u003c\/h3\u003e\u003cp\u003eApplicable 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:\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.P65Warnings.ca.gov\/\"\u003eP65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67757525860530,"sku":"140-16989-D","price":1274.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-16989-D_kit-xl.jpg?v=1792450366","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-16989-d","provider":"PMB Performance","version":"1.0","type":"link"}