{"product_id":"girodisc-d1-307-bmw-front-replacement-brake-disc-rings","title":"GiroDisc D1-307 BMW G Series \/ Toyota GR Supra Front Replacement Brake Disc Rings","description":"\u003cp\u003eGiroDisc D1-307 front replacement brake disc rings renew the friction surfaces of the compatible GiroDisc assemblies fitted to BMW G Series \/ Toyota GR Supra. They are intended for an existing 2-piece disc installation with the correct reusable centre bells.\u003c\/p\u003e\u003cp\u003eReplacing the cast-iron friction rings lets you retain serviceable aluminium bells while renewing the working disc surfaces. Match the full ring part number and the compatible assembly listed below; similar diameter, appearance or vehicle model alone does not confirm the bell interface.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacement cast-iron friction rings for the specified GiroDisc assemblies\u003c\/li\u003e\n\u003cli\u003eFront axle applications shown below\u003c\/li\u003e\n\u003cli\u003eExisting matching GiroDisc centre bells required\u003c\/li\u003e\n\u003cli\u003ePair of rings with replacement mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eVehicle Fitment and Brake Setup\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eVehicle\u003c\/th\u003e\n\u003cth\u003eAxle\u003c\/th\u003e\n\u003cth\u003eModel years\u003c\/th\u003e\n\u003cth\u003eRequired brake setup\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW M240i (G42), M340i, M440i (G2X)\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003ctd\u003e2019-\u003c\/td\u003e\n\u003ctd\u003ewith 348mm front rotors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW X3, X4 M40i (G01, G02)\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003ctd\u003e2018-\u003c\/td\u003e\n\u003ctd\u003ewith 348mm front rotors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW Z4 M40i (G29)\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003ctd\u003e2019-\u003c\/td\u003e\n\u003ctd\u003ewith 348mm front rotors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eToyota GR Supra\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003ewith 3.0L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThese are replacement rings rather than complete brake discs. They require the specified GiroDisc centre bells and must not be fitted to factory or other centre bells unless expressly approved for this exact part number.\u003c\/p\u003e\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eD1-307\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGiroDisc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eReplacement Brake Disc Rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxle\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e348mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold as\u003c\/td\u003e\n\u003ctd\u003ePair of replacement rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentre bells\u003c\/td\u003e\n\u003ctd\u003eExisting compatible GiroDisc bells required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware\u003c\/td\u003e\n\u003ctd\u003eReplacement mounting hardware included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eRecommended Supporting Upgrades\u003c\/h3\u003e\u003cp\u003eThese rings service the matching \u003ca href=\"\/products\/girodisc-a1-307-bmw-front-2-piece-brake-discs\"\u003eA1-307 complete disc assembly\u003c\/a\u003e. Each application uses the correct centre bell for that assembly.\u003c\/p\u003e\u003cp\u003eExplore \u003ca href=\"\/collections\/girodisc-bmw-brakes\"\u003eGiroDisc BMW brakes\u003c\/a\u003e and the \u003ca href=\"\/collections\/girodisc-racing-brake-technology\"\u003ecomplete GiroDisc range\u003c\/a\u003e for supporting brake components.\u003c\/p\u003e\u003ch3\u003eInstallation and Care\u003c\/h3\u003e\u003cp\u003eInspect the retained centre bells before reusing them. Fit the new mounting hardware supplied with the ring kit and follow GiroDisc's ring assembly instructions, including orientation and tightening sequence. Check clearances and complete the required bedding process with suitable pads before using the rebuilt discs.\u003c\/p\u003e\u003cp\u003eContact us to confirm availability and lead time before ordering.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eProduct images may be illustrative. Use the part number and specifications to confirm the item required.\u003c\/small\u003e\u003c\/p\u003e","brand":"Girodisc","offers":[{"title":"Default Title","offer_id":67574054551942,"sku":"D1-307","price":1408.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/0411\/2989\/files\/girodisc-d1-307.jpg?v=1791233443","url":"https:\/\/www.nineteen72performance.com\/products\/girodisc-d1-307-bmw-front-replacement-brake-disc-rings","provider":"Nineteen72 Performance","version":"1.0","type":"link"}