{"product_id":"wilwood-160-8743-gtb","title":"Wilwood Rear Pontiac GTO Slotted GT Rotor, 12.19-Inch Diameter with 7.48-Inch Parking Drum","description":"\u003cp\u003eThe Pontiac GTO rear-package rotor uses a different parking-drum diameter from many other 12.19-inch Wilwood castings. This GT version combines a slotted 0.81-inch friction ring with the 7.48-inch drum and 2.310-inch integral-hat offset. System compatibility is central to choosing a replacement rotor, including its relationship to the caliper, pad and mounting hardware. Wilwood designs and manufactures disc brake systems in Camarillo, California, offering calipers, rotors, master cylinders, valves, fittings and lines across motorsport, street performance and specialized applications. The company was founded in 1977 by Bill Wood.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 160-8743-GTB\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 GT Slotted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Electro Coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate weight:\u003c\/strong\u003e 15.80 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 2.76 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFar-side inside diameter:\u003c\/strong\u003e 6.70 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor offset:\u003c\/strong\u003e 2.310 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal parking-brake drum diameter:\u003c\/strong\u003e 7.48 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal clearance diameter:\u003c\/strong\u003e 6.38 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting-face thickness:\u003c\/strong\u003e 0.21 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHat wheel-stud clearance pattern:\u003c\/strong\u003e 5 x 4.75 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 Pontiac GTO kits with an internal parking drum.\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\u003eMatch the exact Wilwood GTO rear disc\/drum kit and its parking-brake mechanism. Confirm the 2.76-inch register and five-on-4.75-inch stud clearances; the model name alone is insufficient for fitment.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Rotors\/RotorProd?itemno=160-8743-GTB\"\u003eWilwood product specifications\u003c\/a\u003e · \u003ca href=\"https:\/\/www.wilwood.com\/Images\/Rotors\/Rotor_Drawings-Large\/GT-Vented-Rotor-n-Hat-5lug-dw-lg.jpg\"\u003eRotor dimension diagram\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eFor more than 20 years, PMB Performance has helped customers choose brake components. Share the details of your current setup for assistance with rotor selection.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67730100486322,"sku":"160-8743-GTB","price":345.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/160-8743-GTB-xl.jpg?v=1792172948","url":"https:\/\/pmbperformance.com\/products\/wilwood-160-8743-gtb","provider":"PMB Performance","version":"1.0","type":"link"}