{"product_id":"wilwood-140-15846","title":"Wilwood AERO4 Rear Brake Conversion for Big Ford New-Style 2.50-Inch Axles, Black Four-Piston Calipers, 14-Inch GT Rotors and Electric Parking","description":"\u003cp\u003eThis AERO4 rear conversion pairs black radial four-piston calipers with 14.00-inch GT slotted rotors and BP-20 pads. Electronic parking calipers and their control hardware add a static holding function distinct from hydraulic braking. The kit must match the Big Ford new-style housing end and 2.50-inch axle offset, with an appropriate rear brake bias for the front system already installed. Founded by Bill Wood in 1977 and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Its calipers, brake rotors, master cylinders, valves, fittings and brake lines are selected to suit the complete braking system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 140-15846. Quantity: one kit for the stated axle\/application.\u003c\/li\u003e\n\u003cli\u003eRotor specification: 14.00-inch outside diameter × 1.10-inch thickness; GT slotted faces. Spec-37 Iron construction; GT 72 Curved Vane design; published vane configuration: 72 CV.\u003c\/li\u003e\n\u003cli\u003eRotor hats: aluminum, black e-coat finish; Big Brake Hat - Flared Bell. Hat offset: 2.035 inch.\u003c\/li\u003e\n\u003cli\u003eService caliper: AERO4; 4 pistons; stainless piston material. Radial mounting, black powder coat finish.\u003c\/li\u003e\n\u003cli\u003ePublished piston bores: 1.12, 1.12 inches. Supplied pad compound: BP-20.\u003c\/li\u003e\n\u003cli\u003eCaliper hydraulic inlet: 1\/8-27 NPT.\u003c\/li\u003e\n\u003cli\u003eNo replacement wheel hubs are supplied; retain or provide the documented matching hub arrangement.\u003c\/li\u003e\n\u003cli\u003eWheel mounting patterns: 5 x 4.50; 5 x 4.75; 5 x 5.00 inches.\u003c\/li\u003e\n\u003cli\u003eRear housing interface: Big Ford New Style; axle offset: 2.50 in; 63.5 mm.\u003c\/li\u003e\n\u003cli\u003eMinimum nominal wheel diameter: 18 inches. The wheel must also clear the actual caliper and rotor profile in the installation drawing.\u003c\/li\u003e\n\u003cli\u003eSeparate electronic parking calipers, controller, wiring harness and switch are included. EPB actuation is electrical; hydraulic service braking remains independent.\u003c\/li\u003e\n\u003cli\u003eMounting hardware and the specified pads are included. Spindles, master cylinder and brake booster are not supplied.\u003c\/li\u003e\n\u003cli\u003eBrake hoses are not included. Select suitable braided lines and fittings for the installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eMatch this rear package to the measured housing end before considering vehicle-model fitment. The required interface is Big Ford new style with a 2.50-inch axle offset, including the documented bearing retention and axle-flange dimensions. A 1990 Lincoln Town Car entry appears in the table, but the current official compatibility table does not establish that application; axle confirmation is required. The AERO4 service caliper and the separate parking motor need clearance inside the wheel and through the complete suspension range. Review front\/rear brake balance with the existing front system. The controller operates the parking hold while stationary; EPB actuation is not an emergency-braking function. Consult the table below for the individual year\/model and option information.\u003c\/p\u003e\u003cp\u003ePMB Performance brings 20+ years of parts and fitment experience to brake selection. Send the actual spindle or axle details, existing brake package and wheel measurements for help checking this combination.\u003c\/p\u003e\u003cp\u003eManufacturer documentation: \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1352.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: \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\/\"\u003eP65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e\u003cdiv class=\"fitment-table-wrap\" style=\"overflow-x:auto\"\u003e\u003ctable class=\"specs\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eModel option\u003c\/th\u003e\n\u003cth\u003eFront brakes\u003c\/th\u003e\n\u003cth\u003eRear brakes\u003c\/th\u003e\n\u003cth\u003eKit application\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990\u003c\/td\u003e\n\u003ctd\u003eLincoln\u003c\/td\u003e\n\u003ctd\u003eTown Car\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990\u003c\/td\u003e\n\u003ctd\u003eLincoln\u003c\/td\u003e\n\u003ctd\u003eTown Car\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003eDisc\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eRear Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67757366083762,"sku":"140-15846","price":3874.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-15846_kit-xl.jpg?v=1792447074","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-15846","provider":"PMB Performance","version":"1.0","type":"link"}