{"product_id":"girodisc-a1-156-slotted-2-piece-410mm-front-rotor-set-for-porsche-981-982-991-2","title":"GiroDisc A1-156 Slotted 2-Piece 410mm Front Rotor Set for Porsche 981\/982\/991.2","description":"\u003cdiv vocab=\"https:\/\/schema.org\/\" typeof=\"Product\"\u003e\u003cspan property=\"description\"\u003e\u003cdiv style='margin: 0px; padding: 0px; border: 0px; outline: 0px; color: rgb(83, 83, 83); font-family: \"Open Sans\"; font-size: 16px;'\u003eThe Girodisc system is a direct replacement for the OE disc however you must use the same pad shape that is used on the 991 GT3 that came with the iron rotors from the factory.  The annulus (pad swept height) of these pads is smaller than the large PCCB pads, this is done to keep the rotor weight at a reasonable level and allow far better pad selection.  If we manufactured a rotor with the same annulus as the OEM PCCB rotors they would be unnecessarily heavy.\u003c\/div\u003e\n\u003cdiv style='margin: 0px; padding: 0px; border: 0px; outline: 0px; color: rgb(83, 83, 83); font-family: \"Open Sans\"; font-size: 16px;'\u003eThe central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum.  The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc.  The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.\u003c\/div\u003e\n\u003cdiv style='margin: 0px; padding: 0px; border: 0px; outline: 0px; color: rgb(83, 83, 83); font-family: \"Open Sans\"; font-size: 16px;'\u003eThe rotor and hat have a floating mount system, which utilizes 8 or 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by grade 12 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.\u003c\/div\u003e\n\u003cdiv style='margin: 0px; padding: 0px; border: 0px; outline: 0px; color: rgb(83, 83, 83); font-family: \"Open Sans\"; font-size: 16px;'\u003eOnce the Girodisc system is in place, simply replace the cast iron rotor when needed. \u003c\/div\u003e\n\u003cdiv style='margin: 0px; padding: 0px; border: 0px; outline: 0px; color: rgb(83, 83, 83); font-family: \"Open Sans\"; font-size: 16px;'\u003eSold\/priced in pairs.\u003c\/div\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cbr\u003e\u003ctable cellspacing=\"10\" cellpadding=\"0\" align=\"left\" style=\"width:100%\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Girodisc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e A1-156\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eFitment Type:\u003c\/strong\u003e Performance\/Custom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eCalifornia Prop 65 Warning:\u003c\/strong\u003e The following items are found to have compounds and chemicals known to the State of California to cause cancer, birth defects, and reproductive harm.\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eCustom Bundle:\u003c\/strong\u003e No\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eModified Item:\u003c\/strong\u003e No\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Girodisc","offers":[{"title":"Default Title","offer_id":43172011278449,"sku":"girA1-156","price":1950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2286\/3539\/files\/57_3a6199db-911e-4c6a-bc63-634117cddaa5.jpg?v=1777120843","url":"https:\/\/541motorsports.com\/products\/girodisc-a1-156-slotted-2-piece-410mm-front-rotor-set-for-porsche-981-982-991-2","provider":"541 Motorsports","version":"1.0","type":"link"}