{"product_id":"wilwood-160-9987","title":"Wilwood Rear HP Rotor, 12.19 x 0.81 Inches, 3.12-Inch Register","description":"\u003cp\u003eA 3.12-inch center register is the identifying feature of this 12.19-inch HP rear rotor. The plain 0.81-inch friction ring is cast around a 1.910-inch-offset hat and 7.24-inch parking drum, so the larger register must match the axle flange. Camarillo, California is home to Wilwood, founded by Bill Wood in 1977. The company designs and manufactures disc brake systems for motorsport, street performance and specialized applications, supplying rotors, calipers, master cylinders, valves, fittings and lines. Matching the rotor to the complete assembly matters as much as selecting its diameter or surface treatment.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 160-9987\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One rotor; not an axle pair\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside diameter:\u003c\/strong\u003e 12.19 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal thickness:\u003c\/strong\u003e 0.81 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor material:\u003c\/strong\u003e Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e 32 vanes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFriction surface:\u003c\/strong\u003e Plain Face\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Plain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate weight:\u003c\/strong\u003e 14.40 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory burnished:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamically balanced:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation orientation:\u003c\/strong\u003e Non-directional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegistration \/ lug inside diameter:\u003c\/strong\u003e 3.12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFar-side inside diameter:\u003c\/strong\u003e 8.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor offset:\u003c\/strong\u003e 1.910 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal parking-brake drum diameter:\u003c\/strong\u003e 7.24 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal clearance diameter:\u003c\/strong\u003e 7.16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting-face thickness:\u003c\/strong\u003e 0.18 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHat wheel-stud clearance pattern:\u003c\/strong\u003e 5 x 4.50\/4.75\/5.00 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel-stud clearance hole diameter:\u003c\/strong\u003e 0.52 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntended use and restrictions:\u003c\/strong\u003e Rear rotor for compatible internal-drum parking-brake kits.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe integral hat is part of the rotor; caliper, pads, parking-brake mechanism and installation hardware are separate.\u003c\/p\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eConfirm the 3.12-inch bore rather than substituting the 3.06-inch-register version. Match the installed parking shoes, caliper position and wheel-stud clearance pattern together.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Rotors\/RotorProd?itemno=160-9987\"\u003eWilwood product specifications\u003c\/a\u003e · \u003ca href=\"https:\/\/www.wilwood.com\/Images\/Rotors\/Rotor_Drawings-Large\/Ultralite-HP-32-Vane-Rotor-n-Hat-dw-lg.jpg\"\u003eRotor dimension diagram\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003ePMB Performance has supported brake projects for more than 20 years. Our team can help identify the correct replacement when your caliper, hat or hub configuration needs a closer look.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67730107105458,"sku":"160-9987","price":253.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/Ultralite-HP-32-Vane-Rotor-n-Hat-xl_959f96a5-9823-4066-acd5-99fd77ccb45c.jpg?v=1792172984","url":"https:\/\/pmbperformance.com\/products\/wilwood-160-9987","provider":"PMB Performance","version":"1.0","type":"link"}