{"product_id":"wilwood-140-12307-d","title":"Wilwood Black Front SRP Brake \u0026 Hub Kit, Chevrolet Bel Air\/Nomad\/One-Fifty Series\/Sedan Delivery\/Two-Ten Series\/Del Ray (1955–1957), 12.88-Inch Rotors","description":"\u003cp\u003eDrilled\/slotted Spec-37 rotors and black six-piston calipers distinguish this Wilwood front hub conversion for the specified Chevrolet drop spindles. The 12.88-inch rings use 48 curved vanes and separate hats, while the supplied hubs provide the wheel mounting. Verify the spindle choice before ordering; the application depends on installed suspension hardware rather than model year alone. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.\u003c\/p\u003e\u003ch2\u003eTechnical Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 140-12307-D\u003c\/li\u003e\n\u003cli\u003eType: Forged Narrow Superlite 6R Big Brake Front Brake Kit (Hub)\u003c\/li\u003e\n\u003cli\u003eCalipers: Forged Narrow Superlite 6R; 6 pistons per caliper; Black Powder Coat.\u003c\/li\u003e\n\u003cli\u003eCaliper bore sizes: 1.62, 1.12, 1.12 inches. Piston type: Stainless.\u003c\/li\u003e\n\u003cli\u003eIncluded pad compound: BP-10.\u003c\/li\u003e\n\u003cli\u003eRotors: 12.88-inch diameter × 1.10-inch thickness; SRP Drilled \u0026amp; Slotted; Spec-37 Iron; Black Electro Coat surface; 48 curved vanes.\u003c\/li\u003e\n\u003cli\u003eReplacement hubs: Hub - Hat Mount; Aluminum; Bare.\u003c\/li\u003e\n\u003cli\u003eWheel bolt circles: 5 x 4.50; 5 x 4.75 inches.\u003c\/li\u003e\n\u003cli\u003eIncluded: paired calipers, pads, rotors, mounting brackets and assembly hardware, replacement hubs, rotor hats.\u003c\/li\u003e\n\u003cli\u003eHydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.\u003c\/li\u003e\n\u003cli\u003eConditional wheel screening size: 17 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eDS876 details the Heidts Tri-5 arrangement, with application rows identifying additional listed spindle options. The kit does not fit original 1955–1957 Chevrolet spindles. Check the hub pattern and the actual 17-inch-or-larger wheel profile, including spoke offset around the radial caliper. Hydraulic lines are selected separately, and bearing condition, stud engagement and master-cylinder suitability must be assessed as part of the complete installation.\u003c\/p\u003e\u003cp\u003eMatch the individual model, year, submodel and brake configuration in the fitment table below.\u003c\/p\u003e\u003cp\u003eWilwood installation documents: \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds876.pdf\"\u003eInstallation instructions\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003ePMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCalifornia Proposition 65 warning, brake pads only:\u003c\/strong\u003e WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to \u003ca href=\"https:\/\/www.p65warnings.ca.gov\/\"\u003ewww.p65warnings.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\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eBel Air\u003c\/td\u003e\n\u003ctd\u003ew\/ Heidts 2\" Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eBel Air\u003c\/td\u003e\n\u003ctd\u003ew\/ Ridetech Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 5, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eBel Air\u003c\/td\u003e\n\u003ctd\u003ew\/CPP E5557DS Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eNomad\u003c\/td\u003e\n\u003ctd\u003ew\/ Heidts 2\" Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eNomad\u003c\/td\u003e\n\u003ctd\u003ew\/ Ridetech Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 5, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eNomad\u003c\/td\u003e\n\u003ctd\u003ew\/CPP E5557DS Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eOne-Fifty Series\u003c\/td\u003e\n\u003ctd\u003ew\/ Heidts 2\" Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eOne-Fifty Series\u003c\/td\u003e\n\u003ctd\u003ew\/ Ridetech Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 5, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eOne-Fifty Series\u003c\/td\u003e\n\u003ctd\u003ew\/CPP E5557DS Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSedan Delivery\u003c\/td\u003e\n\u003ctd\u003ew\/ Heidts 2\" Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSedan Delivery\u003c\/td\u003e\n\u003ctd\u003ew\/ Ridetech Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 5, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSedan Delivery\u003c\/td\u003e\n\u003ctd\u003ew\/CPP E5557DS Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eTwo-Ten Series\u003c\/td\u003e\n\u003ctd\u003ew\/ Heidts 2\" Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eTwo-Ten Series\u003c\/td\u003e\n\u003ctd\u003ew\/ Ridetech Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 5, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eTwo-Ten Series\u003c\/td\u003e\n\u003ctd\u003ew\/CPP E5557DS Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eDel Ray\u003c\/td\u003e\n\u003ctd\u003ew\/ Heidts 2\" Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eDel Ray\u003c\/td\u003e\n\u003ctd\u003ew\/ Ridetech Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 5, 2, 3, 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1957\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eDel Ray\u003c\/td\u003e\n\u003ctd\u003ew\/CPP E5557DS Drop Spindle\u003c\/td\u003e\n\u003ctd\u003eDrop\u003c\/td\u003e\n\u003ctd\u003eDrum\u003c\/td\u003e\n\u003ctd\u003eFront Kit\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4\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":67765571649714,"sku":"140-12307-D","price":2354.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/140-12307-D_kit-xl.jpg?v=1792520847","url":"https:\/\/pmbperformance.com\/products\/wilwood-140-12307-d","provider":"PMB Performance","version":"1.0","type":"link"}