{"product_id":"girodisc-a1-220-bmw-f80-f82-f83-f87-front-400mm-2-piece-brake-discs-pair-m2-competition-m3-m4","title":"Girodisc A1-220 400mm Front 2-Piece Floating Slotted Brake Discs\/Rotors (Pair) for BMW F80 M3, F82\/F83 M4 \u0026 F87 M2 Competition (S55)","description":"\u003cdiv\u003e\n  \u003ch2\u003eGirodisc A1-220 BMW F80 F82 F83 F87 Front 400mm 2-Piece Brake Discs - Pair\u003c\/h2\u003e\n  \u003cp\u003e\n  Upgrade the front brakes on your BMW M2 Competition, M3 or M4 with the Girodisc A1-220 400mm 2-piece floating brake discs. These slotted, vented performance front rotors are engineered for serious road and track use, delivering stronger braking, faster cooling and exceptional consistency. Direct fit for factory calipers, this is a premium bolt-on brake upgrade for the S55-powered BMW F80 M3, F82 F83 M4 and F87 M2 Competition platforms.\n  \u003c\/p\u003e\n  \u003cp\u003e\n  Made in the USA, the rotors use Girodisc’s proprietary cast iron rings with curved vane internal ventilation to act like a centrifugal pump, pulling air through the disc for maximum heat rejection and reduced brake fade. The lightweight 6061-T6 aircraft-grade aluminium hats are U.S. sourced and help cut unsprung and rotational mass for sharper turn-in and improved ride quality. A floating mount with high strength alloy steel drive pins and anti-noise spring washers allows the disc to expand under heat, self-centre between the pads and stay quiet on the road.\n  \u003c\/p\u003e\n  \u003cp\u003e\n  We have fitted and used these on multiple customer BMW M2 Competition, M3 and M4 builds, and feedback has been consistently excellent: stronger initial bite, improved pedal feel, better high-temperature performance and confidence lap after lap. When the time comes, simply replace the iron rings and keep the hats, reducing long-term running costs.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eWhy choose Girodisc A1-220 400mm front rotors\u003c\/h3\u003e\n  \u003cul\u003e\n  \u003cli\u003eDirect replacement front brake discs for BMW F80 M3, F82 F83 M4, F87 M2 Competition\u003c\/li\u003e\n  \u003cli\u003e400mm 2-piece floating design for serious road and track performance\u003c\/li\u003e\n  \u003cli\u003eCurved vane vented rotor for rapid cooling and reduced fade on track days\u003c\/li\u003e\n  \u003cli\u003eSlotted face and zinc coated finish for consistent pad refresh and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e6061-T6 aluminium hats reduce unsprung weight and rotational mass\u003c\/li\u003e\n  \u003cli\u003eFloating drive pin system with anti-noise spring washers for quiet operation\u003c\/li\u003e\n  \u003cli\u003eSelf-centering rotor for even pad contact and improved wear\u003c\/li\u003e\n  \u003cli\u003eServiceable design – replace rings only when worn\u003c\/li\u003e\n  \u003cli\u003eSold as a matched pair of front discs\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n  \u003cli\u003ePart number: A1-220\u003c\/li\u003e\n  \u003cli\u003eDisc diameter: 400.0 mm\u003c\/li\u003e\n  \u003cli\u003eDisc height: 65.5 mm\u003c\/li\u003e\n  \u003cli\u003eMaximum thickness: 36.0 mm\u003c\/li\u003e\n  \u003cli\u003eMinimum thickness: 34.0 mm\u003c\/li\u003e\n  \u003cli\u003eConstruction: 2-piece floating\u003c\/li\u003e\n  \u003cli\u003eVane style: Curved vane\u003c\/li\u003e\n  \u003cli\u003eType: Vented\u003c\/li\u003e\n  \u003cli\u003eFinish: Slotted and zinc coated\u003c\/li\u003e\n  \u003cli\u003eHat material: 6061-T6 aluminium\u003c\/li\u003e\n  \u003cli\u003eRing material: Proprietary cast iron\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eVehicle compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n  \u003cli\u003eBMW M Series F80 M3 Saloon S55 (2012-2015)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F80 LCI M3 Saloon S55 (2015-2018)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F82 M4 Coupe S55 (2013-2017)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F82 M4 GTS Coupe S55 (2013-2017)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F82 LCI M4 Coupe S55 (2016-2019)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F82 LCI M4 CS Coupe S55 (2016-2019)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F83 M4 Convertible S55 (2013-2017)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F83 LCI M4 Convertible S55 (2016-2019)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F87 LCI M2 N55 (2016+)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F87 LCI M2 Competition S55 (2016+)\u003c\/li\u003e\n  \u003cli\u003eBMW M Series F87 LCI M2 CS S55 (2018+)\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003ePlease note\u003c\/h3\u003e\n  \u003cp\u003e\n  Suitable with red or silver calipers. Also compatible with CS models with the optional carbon-ceramic brake package with gold calipers. Not suitable for models with blue Brembo calipers, which require different size discs.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eFitting and support\u003c\/h3\u003e\n  \u003cp\u003e\n  Professional installation recommended. Nforcd offers fitting at our Warwickshire workshop. Request a quote at Sales@nforcd.com. Follow Girodisc’s bedding-in procedure after installation for best performance.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eMatching rears\u003c\/h3\u003e\n  \u003cp\u003e\n  Matching Girodisc 380mm rear 2-piece brake discs for BMW F80 F82 F83 F87 are available. Search our store for the complementary rear set.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eManufacturer\u003c\/h3\u003e\n  \u003cp\u003e\n  Girodisc – engineered and machined in the USA.\n  \u003c\/p\u003e\n  \n  \u003ch3\u003eSEO-friendly search terms\u003c\/h3\u003e\n  \u003cp\u003e\n  BMW M2 Competition front brake discs, BMW M3 front brake discs, BMW M4 front brake discs, F80 M3 front rotors 400mm, F82 F83 M4 front rotors 400mm, F87 M2 Competition 400mm brake upgrade, Girodisc A1-220, Girodisc front rotors BMW, slotted front brake discs BMW M3 M4, 2-piece floating brake discs BMW, performance brake upgrade BMW S55, track day brake discs BMW M2 M3 M4, lightweight brake rotors BMW F80 F82 F83 F87.\n  \u003c\/p\u003e\n  \u003c\/div\u003e","brand":"BMW","offers":[{"title":"Default Title","offer_id":56005456953730,"sku":"A1-220","price":1485.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/GirodiscBMWF80F82F83F87Front400mm2-PieceBrakeDiscs-Pair_M2Competition_M3_M4_-1.jpg?v=1764019181","url":"https:\/\/mjmodifications.co.uk\/products\/girodisc-a1-220-bmw-f80-f82-f83-f87-front-400mm-2-piece-brake-discs-pair-m2-competition-m3-m4","provider":"MJ Modifications","version":"1.0","type":"link"}