{"product_id":"girodisc-2-piece-rear-rotors-2018-2021-subaru-wrx-sti","title":"GiroDisc 2-Piece Rear Rotors 2018-2021 Subaru WRX STI","description":"\u003cp\u003eThe 2018-2021 WRX STI moved to larger Brembo brakes with yellow calipers. These Giro Disc 2-piece rear rotors replace the factory rear discs on those cars and work with the factory calipers. They take unsprung weight off the rear axle, and the floating iron rings handle heat better than the stock one-piece rotor.\u003c\/p\u003e\u003ch3\u003eConstruction\u003c\/h3\u003e\u003cp\u003eThe center hat is machined from US-sourced 6061-T6 aircraft-grade aluminum. The ring is GiroDisc's own proprietary cast iron, poured in the USA and machined from start to finish in GiroDisc's shop. A curved vane design developed in racing works as a centrifugal pump, forcing cooling air through the disc to keep temperatures in check through long sessions. Lighter rotors also cut rotating and unsprung weight, which helps acceleration and suspension response.\u003c\/p\u003e\u003ch3\u003eFloating mount, quiet on the street\u003c\/h3\u003e\u003cp\u003eRing and hat are joined by 10 high-strength alloy steel drive pins, made by GiroDisc in the USA and cadmium plated for long-lasting corrosion resistance. The pins carry the braking load while keeping axial and radial float between the hat and the ring. Class 12.9 cap screws with hardened washers secure them, and anti-noise spring washers on the rotor side let the ring grow with heat without the cold rattle typical of floating rotors. The float also lets the ring center itself between the pads. Once the system is on the car, you only replace the iron ring when it wears.\u003c\/p\u003e\u003ch3\u003eBrake pads\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e these rear rotors require brake pads modified for extra clearance. Standard rear pads will not work. GiroDisc offers the modified pads in several compounds; call us and we will match one to how you drive. The rotors themselves bolt on with no changes to the car.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cp\u003eTwo assembled rear rotors, one per side, each iron ring already mounted to its aluminum hat. Pads are not included.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;width:100%\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003ePart number\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003eA2-185\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003eGiroDisc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003e2-piece fully floating slotted rotor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003ePosition\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003eRear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eRing material\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003eProprietary cast iron, poured in the USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eHat\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003e6061-T6 aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eDrive pins\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003e10, alloy steel, cadmium plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eSold as\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003ePair (one left, one right)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eShipping dimensions\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003e15.1 x 14.9 x 6.8 in (38.4 x 37.8 x 17.3 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px;font-weight:bold\"\u003eShipping weight\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ccd;padding:6px\"\u003e28.4 lb (12.9 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eFitment notes\u003c\/h3\u003e\u003cp\u003eFits the 2018-2021 WRX STI with the factory Brembo rear brakes. It does not fit the regular WRX or 2017 and older STI models. Front rotors: A1-185. The product photo is GiroDisc's representative image of its 2-piece rotors.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003ctable style=\"border-collapse:collapse;width:100%\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#03589c;color:#ffffff;padding:8px;border:1px solid #03589c\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#ffffff;padding:8px;border:1px solid #03589c\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#ffffff;padding:8px;border:1px solid #03589c\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#ffffff;padding:8px;border:1px solid #03589c\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"background:#03589c;color:#ffffff;padding:8px;border:1px solid #03589c\"\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;border:1px solid #c9dfe8\"\u003e2018-2021\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;border:1px solid #c9dfe8\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;border:1px solid #c9dfe8\"\u003eWRX STI\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;border:1px solid #c9dfe8\"\u003eVA\u003c\/td\u003e\n\u003ctd style=\"background:#e8f4f8;padding:8px;border:1px solid #c9dfe8\"\u003e2.5L Turbo H4 (EJ257)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ccaption style=\"caption-side:bottom;text-align:left;padding-top:10px\"\u003eQuestions about fitment? Call (310) 231-0292 or text (310) 886-3111.\u003c\/caption\u003e\n\u003c\/table\u003e","brand":"GiroDisc","offers":[{"title":"Default Title","offer_id":43087563194519,"sku":"A2-185","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2641\/0682\/products\/11c9a432f0166a8cbbc66c916e1e6c15_c820c8db-371d-492e-a0e4-d49d81a7dcc0.jpg?v=1683304209","url":"https:\/\/autotalent.com\/products\/girodisc-2-piece-rear-rotors-2018-2021-subaru-wrx-sti","provider":"AutoTalent","version":"1.0","type":"link"}