{"product_id":"wilwood-120-17870-bk","title":"Wilwood Black Narrow DynaPro Four-Piston Brake Caliper with 4.75-Inch Radial Mount","description":"\u003cp\u003eBlack powder coating finishes this Narrow DynaPro hydraulic caliper. Four equal 1.62-inch bores provide the specified piston area, and the thin rotor opening suits the dedicated quarter-inch-width arrangement. A radial bracket locates the body over the rotor; the caliper is one component of that assembly and does not define a vehicle application on its own. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. Its disc brake systems and components serve motorsport, street-performance and specialized applications. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are among its products, selected according to the complete brake system’s requirements.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 120-17870-BK\u003c\/li\u003e\n\u003cli\u003eCaliper type: Narrow Dynapro Radial Mount\u003c\/li\u003e\n\u003cli\u003eConstruction: Billet Aluminium\u003c\/li\u003e\n\u003cli\u003eFinish: Black Powder Coat\u003c\/li\u003e\n\u003cli\u003ePiston bores: 1.62 \/ 1.62 inches\u003c\/li\u003e\n\u003cli\u003ePiston type: Stainless\u003c\/li\u003e\n\u003cli\u003ePiston count: 4\u003c\/li\u003e\n\u003cli\u003ePublished piston area: 4.12 square inches\u003c\/li\u003e\n\u003cli\u003eDust boots: No\u003c\/li\u003e\n\u003cli\u003eNominal rotor width: 0.25 inch\u003c\/li\u003e\n\u003cli\u003eRotor thickness limits: 0.25–0.25 inches\u003c\/li\u003e\n\u003cli\u003eRotor diameter limits: 10.75–12.19 inches\u003c\/li\u003e\n\u003cli\u003eMounting style: Radial\u003c\/li\u003e\n\u003cli\u003eHandedness: Not restricted to one side; correct mounting and bleed orientation required\u003c\/li\u003e\n\u003cli\u003eMounting centers: 4.75 inches\u003c\/li\u003e\n\u003cli\u003eMounting-hole size: 0.39 inch\u003c\/li\u003e\n\u003cli\u003eMount height: 1.61 inch\u003c\/li\u003e\n\u003cli\u003eHydraulic inlet thread: M10 x 1.25\u003c\/li\u003e\n\u003cli\u003eRequired pad shape: 7812\u003c\/li\u003e\n\u003cli\u003ePublished pad area: 6.36 square inches\u003c\/li\u003e\n\u003cli\u003ePublished pad volume: 2.1 cubic inches\u003c\/li\u003e\n\u003cli\u003eManufacturer-listed component weight: 4.1 lb\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eThe receiving mount needs 4.75-inch centers and the correct stand-off from the rotor. Compare the full body and pad dimensions with the wheel and hub, especially if replacing a different narrow caliper. Use an M10 x 1.25 inlet fitting appropriate for the system, and check bleed-screw orientation after positioning the caliper.\u003c\/p\u003e\u003cp\u003ePMB Performance brings over 20 years of brake and parts experience to selection questions. Send the existing caliper reference and brake-package details for help checking compatibility.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67764641792178,"sku":"120-17870-BK","price":394.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/120-17870-BK-xl.jpg?v=1792514509","url":"https:\/\/pmbperformance.com\/products\/wilwood-120-17870-bk","provider":"PMB Performance","version":"1.0","type":"link"}