{"product_id":"girodisc-bmw-g80-g81-m3-g82-g83-m4-g87-m2-2-piece-front-brake-discs-rotors-pair-a1-282","title":"GiroDisc BMW G80\/G81 M3, G82\/G83 M4 \u0026 G87 M2 2-Piece Front Brake Discs\/Rotors Pair","description":"\u003cp data-start=\"90\" data-end=\"571\"\u003eDesigned for drivers who demand exceptional braking performance on both road and track, the \u003cstrong data-start=\"182\" data-end=\"220\"\u003eGiroDisc 2-Piece Front Brake Discs\u003c\/strong\u003e are a direct replacement upgrade for the factory steel front brake discs fitted to the \u003cstrong data-start=\"308\" data-end=\"377\"\u003eBMW G80 M3, G81 M3 Touring, G82 M4, G83 M4 Convertible and G87 M2\u003c\/strong\u003e. Featuring a fully floating two-piece design, these premium rotors reduce unsprung weight, improve heat management and provide the durability required for high-performance driving environments.\u003c\/p\u003e\n\u003cp data-start=\"573\" data-end=\"991\"\u003eManufactured in the USA using GiroDisc's proprietary high-carbon iron alloy, these front brake discs are engineered to withstand repeated heavy braking while maintaining consistent pedal feel and braking performance. Whether you're building a dedicated track car or simply looking for a superior braking solution for spirited road driving, GiroDisc rotors offer a significant upgrade over conventional one-piece discs.\u003c\/p\u003e\n\u003chr data-start=\"993\" data-end=\"996\"\u003e\n\u003ch3 data-section-id=\"1iz91iu\" data-start=\"998\" data-end=\"1014\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"1016\" data-end=\"1419\"\u003e\n\u003cli data-section-id=\"1mjxi6n\" data-start=\"1016\" data-end=\"1072\"\u003eDirect replacement for factory front steel brake discs\u003c\/li\u003e\n\u003cli data-section-id=\"1j9b2yq\" data-start=\"1073\" data-end=\"1123\"\u003eDesigned for BMW G80\/G81 M3, G82\/G83 M4 \u0026amp; G87 M2\u003c\/li\u003e\n\u003cli data-section-id=\"fyyvfx\" data-start=\"1124\" data-end=\"1158\"\u003eGiroDisc part number: \u003cstrong data-start=\"1148\" data-end=\"1158\"\u003eA1-282\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1jxdn8x\" data-start=\"1159\" data-end=\"1196\"\u003eFully floating 2-piece rotor design\u003c\/li\u003e\n\u003cli data-section-id=\"ldlkeu\" data-start=\"1197\" data-end=\"1233\"\u003eReduces unsprung and rotating mass\u003c\/li\u003e\n\u003cli data-section-id=\"1y34zqi\" data-start=\"1234\" data-end=\"1276\"\u003eProprietary high-carbon iron rotor rings\u003c\/li\u003e\n\u003cli data-section-id=\"60ewji\" data-start=\"1277\" data-end=\"1302\"\u003eReusable aluminium hats\u003c\/li\u003e\n\u003cli data-section-id=\"1xn53vd\" data-start=\"1303\" data-end=\"1337\"\u003e72 curved internal cooling vanes\u003c\/li\u003e\n\u003cli data-section-id=\"x8bnvc\" data-start=\"1338\" data-end=\"1363\"\u003eRace-proven performance\u003c\/li\u003e\n\u003cli data-section-id=\"9dnxlp\" data-start=\"1364\" data-end=\"1402\"\u003eSuitable for fast road and track use\u003c\/li\u003e\n\u003cli data-section-id=\"1bx1ekl\" data-start=\"1403\" data-end=\"1419\"\u003eSold as a pair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1421\" data-end=\"1424\"\u003e\n\u003ch3 data-section-id=\"1ro1pgg\" data-start=\"1426\" data-end=\"1462\"\u003eLightweight 2-Piece Construction\u003c\/h3\u003e\n\u003cp data-start=\"1464\" data-end=\"1576\"\u003eUnlike conventional one-piece brake discs, GiroDisc rotors utilise a lightweight two-piece design consisting of:\u003c\/p\u003e\n\u003cul data-start=\"1578\" data-end=\"1680\"\u003e\n\u003cli data-section-id=\"g2yf1z\" data-start=\"1578\" data-end=\"1608\"\u003eHigh-carbon iron rotor rings\u003c\/li\u003e\n\u003cli data-section-id=\"1is8rt5\" data-start=\"1609\" data-end=\"1646\"\u003eCNC-machined 6061-T6 aluminium hats\u003c\/li\u003e\n\u003cli data-section-id=\"4ne8f4\" data-start=\"1647\" data-end=\"1680\"\u003eHigh-strength floating hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1682\" data-end=\"1712\"\u003eThis design helps reduce both:\u003c\/p\u003e\n\u003cul data-start=\"1714\" data-end=\"1749\"\u003e\n\u003cli data-section-id=\"18y5hdq\" data-start=\"1714\" data-end=\"1731\"\u003eUnsprung weight\u003c\/li\u003e\n\u003cli data-section-id=\"egao7x\" data-start=\"1732\" data-end=\"1749\"\u003eRotational mass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1751\" data-end=\"1838\"\u003eResulting in improved vehicle responsiveness, steering feel and suspension performance.\u003c\/p\u003e\n\u003chr data-start=\"1840\" data-end=\"1843\"\u003e\n\u003ch3 data-section-id=\"ou91yc\" data-start=\"1845\" data-end=\"1877\"\u003eSuperior Cooling Performance\u003c\/h3\u003e\n\u003cp data-start=\"1879\" data-end=\"2093\"\u003eEach rotor ring features \u003cstrong data-start=\"1904\" data-end=\"1932\"\u003e72 curved internal vanes\u003c\/strong\u003e that act as a centrifugal air pump, drawing cool air through the centre of the disc and expelling heat more efficiently than conventional straight-vane designs.\u003c\/p\u003e\n\u003cp data-start=\"2095\" data-end=\"2112\"\u003eBenefits include:\u003c\/p\u003e\n\u003cul data-start=\"2114\" data-end=\"2261\"\u003e\n\u003cli data-section-id=\"bqrfjd\" data-start=\"2114\" data-end=\"2144\"\u003eLower operating temperatures\u003c\/li\u003e\n\u003cli data-section-id=\"1h75at3\" data-start=\"2145\" data-end=\"2180\"\u003eImproved resistance to brake fade\u003c\/li\u003e\n\u003cli data-section-id=\"1mlpeeg\" data-start=\"2181\" data-end=\"2209\"\u003eEnhanced thermal stability\u003c\/li\u003e\n\u003cli data-section-id=\"1ei7soo\" data-start=\"2210\" data-end=\"2261\"\u003eGreater consistency during repeated heavy braking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2263\" data-end=\"2273\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"2275\" data-end=\"2358\"\u003e\n\u003cli data-section-id=\"1ngfh4p\" data-start=\"2275\" data-end=\"2294\"\u003eFast road driving\u003c\/li\u003e\n\u003cli data-section-id=\"c5ec6g\" data-start=\"2295\" data-end=\"2307\"\u003eTrack days\u003c\/li\u003e\n\u003cli data-section-id=\"scxo0g\" data-start=\"2308\" data-end=\"2328\"\u003eTime attack builds\u003c\/li\u003e\n\u003cli data-section-id=\"qzyse2\" data-start=\"2329\" data-end=\"2358\"\u003ePerformance street vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2360\" data-end=\"2363\"\u003e\n\u003ch3 data-section-id=\"9fvnty\" data-start=\"2365\" data-end=\"2403\"\u003eProprietary High-Carbon Iron Alloy\u003c\/h3\u003e\n\u003cp data-start=\"2405\" data-end=\"2563\"\u003eThe rotor rings are manufactured from GiroDisc's specially developed high-carbon iron casting, engineered specifically for demanding performance applications.\u003c\/p\u003e\n\u003cp data-start=\"2565\" data-end=\"2584\"\u003eAdvantages include:\u003c\/p\u003e\n\u003cul data-start=\"2586\" data-end=\"2725\"\u003e\n\u003cli data-section-id=\"inawtj\" data-start=\"2586\" data-end=\"2611\"\u003eImproved heat tolerance\u003c\/li\u003e\n\u003cli data-section-id=\"1hq7egn\" data-start=\"2612\" data-end=\"2636\"\u003eReduced thermal stress\u003c\/li\u003e\n\u003cli data-section-id=\"1pjmld3\" data-start=\"2637\" data-end=\"2658\"\u003eEnhanced durability\u003c\/li\u003e\n\u003cli data-section-id=\"8gshu6\" data-start=\"2659\" data-end=\"2680\"\u003eLonger service life\u003c\/li\u003e\n\u003cli data-section-id=\"9zhil8\" data-start=\"2681\" data-end=\"2725\"\u003eGreater crack resistance under extreme use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2727\" data-end=\"2837\"\u003eThis advanced metallurgy helps the discs maintain performance during repeated high-temperature braking cycles.\u003c\/p\u003e\n\u003chr data-start=\"2839\" data-end=\"2842\"\u003e\n\u003ch3 data-section-id=\"1pk84wf\" data-start=\"2844\" data-end=\"2880\"\u003eFully Floating Motorsport Design\u003c\/h3\u003e\n\u003cp data-start=\"2882\" data-end=\"2964\"\u003eEach assembly utilises GiroDisc's race-proven floating hardware system, featuring:\u003c\/p\u003e\n\u003cul data-start=\"2966\" data-end=\"3059\"\u003e\n\u003cli data-section-id=\"x54gst\" data-start=\"2966\" data-end=\"2998\"\u003eHigh-strength steel drive pins\u003c\/li\u003e\n\u003cli data-section-id=\"1cfrce1\" data-start=\"2999\" data-end=\"3019\"\u003eBelleville washers\u003c\/li\u003e\n\u003cli data-section-id=\"1wfwjcs\" data-start=\"3020\" data-end=\"3034\"\u003eSpring clips\u003c\/li\u003e\n\u003cli data-section-id=\"1e0cep2\" data-start=\"3035\" data-end=\"3059\"\u003eControlled rotor float\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3061\" data-end=\"3201\"\u003eThis allows the rotor ring to expand and contract naturally under heat while maintaining excellent pedal feel and street-friendly operation.\u003c\/p\u003e\n\u003cp data-start=\"3203\" data-end=\"3217\"\u003eThe result is:\u003c\/p\u003e\n\u003cul data-start=\"3219\" data-end=\"3370\"\u003e\n\u003cli data-section-id=\"1orfkez\" data-start=\"3219\" data-end=\"3257\"\u003eReduced stress on braking components\u003c\/li\u003e\n\u003cli data-section-id=\"1rza9m6\" data-start=\"3258\" data-end=\"3287\"\u003eImproved thermal management\u003c\/li\u003e\n\u003cli data-section-id=\"1vbjvs0\" data-start=\"3288\" data-end=\"3310\"\u003eLong-term durability\u003c\/li\u003e\n\u003cli data-section-id=\"1a2d1co\" data-start=\"3311\" data-end=\"3370\"\u003eNo excessive noise associated with loose floating systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3372\" data-end=\"3375\"\u003e\n\u003ch3 data-section-id=\"1wrkrjr\" data-start=\"3377\" data-end=\"3405\"\u003eServiceable Rotor Design\u003c\/h3\u003e\n\u003cp data-start=\"3407\" data-end=\"3551\"\u003eWhen the rotor rings eventually reach the end of their service life, the aluminium hats can be retained and fitted with replacement rotor rings.\u003c\/p\u003e\n\u003cp data-start=\"3553\" data-end=\"3582\"\u003eReplacement ring part number:\u003c\/p\u003e\n\u003cul data-start=\"3584\" data-end=\"3596\"\u003e\n\u003cli data-section-id=\"1q30lm0\" data-start=\"3584\" data-end=\"3596\"\u003e\u003cstrong data-start=\"3586\" data-end=\"3596\"\u003eD1-282\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3598\" data-end=\"3701\"\u003eThis significantly reduces long-term maintenance costs compared to replacing complete rotor assemblies.\u003c\/p\u003e\n\u003chr data-start=\"3703\" data-end=\"3706\"\u003e\n\u003ch3 data-section-id=\"1dqbs77\" data-start=\"3708\" data-end=\"3734\"\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul data-start=\"3736\" data-end=\"4024\"\u003e\n\u003cli data-section-id=\"60414d\" data-start=\"3736\" data-end=\"3766\"\u003eGiroDisc Part Number: A1-282\u003c\/li\u003e\n\u003cli data-section-id=\"1j5j19l\" data-start=\"3767\" data-end=\"3812\"\u003eConfiguration: Fully Floating 2-Piece Rotor\u003c\/li\u003e\n\u003cli data-section-id=\"ix7k0q\" data-start=\"3813\" data-end=\"3859\"\u003eRotor Material: Proprietary High-Carbon Iron\u003c\/li\u003e\n\u003cli data-section-id=\"kllpm1\" data-start=\"3860\" data-end=\"3893\"\u003eHat Material: 6061-T6 Aluminium\u003c\/li\u003e\n\u003cli data-section-id=\"1f30qv8\" data-start=\"3894\" data-end=\"3922\"\u003eHat Finish: Black Anodised\u003c\/li\u003e\n\u003cli data-section-id=\"nuc5t8\" data-start=\"3923\" data-end=\"3964\"\u003eInternal Cooling Vanes: 72 Curved Vanes\u003c\/li\u003e\n\u003cli data-section-id=\"yac8m6\" data-start=\"3965\" data-end=\"3980\"\u003eSold As: Pair\u003c\/li\u003e\n\u003cli data-section-id=\"bpcnec\" data-start=\"3981\" data-end=\"4024\"\u003eMinimum Recommended Rotor Thickness: 34mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4026\" data-end=\"4029\"\u003e\n\u003ch3 data-section-id=\"purqi0\" data-start=\"4031\" data-end=\"4048\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp data-start=\"4050\" data-end=\"4107\"\u003eSuitable for vehicles equipped with factory steel brakes.\u003c\/p\u003e\n\u003ch4 data-start=\"4109\" data-end=\"4124\"\u003eBMW G80 M3\u003c\/h4\u003e\n\u003cul data-start=\"4126\" data-end=\"4195\"\u003e\n\u003cli data-section-id=\"1jxlopt\" data-start=\"4126\" data-end=\"4138\"\u003eBMW G80 M3\u003c\/li\u003e\n\u003cli data-section-id=\"15hc1w4\" data-start=\"4139\" data-end=\"4163\"\u003eBMW G80 M3 Competition\u003c\/li\u003e\n\u003cli data-section-id=\"2jqsu8\" data-start=\"4164\" data-end=\"4195\"\u003eBMW G80 M3 Competition xDrive\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"4197\" data-end=\"4220\"\u003eBMW G81 M3 Touring\u003c\/h4\u003e\n\u003cul data-start=\"4222\" data-end=\"4275\"\u003e\n\u003cli data-section-id=\"hw644c\" data-start=\"4222\" data-end=\"4242\"\u003eBMW G81 M3 Touring\u003c\/li\u003e\n\u003cli data-section-id=\"imp44p\" data-start=\"4243\" data-end=\"4275\"\u003eBMW G81 M3 Competition Touring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"4277\" data-end=\"4292\"\u003eBMW G82 M4\u003c\/h4\u003e\n\u003cul data-start=\"4294\" data-end=\"4363\"\u003e\n\u003cli data-section-id=\"1jxk59g\" data-start=\"4294\" data-end=\"4306\"\u003eBMW G82 M4\u003c\/li\u003e\n\u003cli data-section-id=\"10c9yoh\" data-start=\"4307\" data-end=\"4331\"\u003eBMW G82 M4 Competition\u003c\/li\u003e\n\u003cli data-section-id=\"1c66pnp\" data-start=\"4332\" data-end=\"4363\"\u003eBMW G82 M4 Competition xDrive\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"4365\" data-end=\"4392\"\u003eBMW G83 M4 Convertible\u003c\/h4\u003e\n\u003cul data-start=\"4394\" data-end=\"4431\"\u003e\n\u003cli data-section-id=\"1jxhvr9\" data-start=\"4394\" data-end=\"4406\"\u003eBMW G83 M4\u003c\/li\u003e\n\u003cli data-section-id=\"1d2gfao\" data-start=\"4407\" data-end=\"4431\"\u003eBMW G83 M4 Competition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"4433\" data-end=\"4448\"\u003eBMW G87 M2\u003c\/h4\u003e\n\u003cul data-start=\"4450\" data-end=\"4462\"\u003e\n\u003cli data-section-id=\"1jxet1j\" data-start=\"4450\" data-end=\"4462\"\u003eBMW G87 M2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4464\" data-end=\"4533\"\u003e\u003cstrong data-start=\"4464\" data-end=\"4533\"\u003eNot compatible with Carbon Ceramic Brake (CCB) equipped vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"4535\" data-end=\"4538\"\u003e\n\u003ch3 data-section-id=\"jpe06k\" data-start=\"4540\" data-end=\"4564\"\u003eWhy Choose GiroDisc?\u003c\/h3\u003e\n\u003cp data-start=\"4566\" data-end=\"4656\"\u003eGiroDisc is trusted worldwide by professional drivers, race teams and BMW enthusiasts for:\u003c\/p\u003e\n\u003cul data-start=\"4658\" data-end=\"4834\"\u003e\n\u003cli data-section-id=\"180mju5\" data-start=\"4658\" data-end=\"4689\"\u003eMotorsport-proven engineering\u003c\/li\u003e\n\u003cli data-section-id=\"1q5peo5\" data-start=\"4690\" data-end=\"4723\"\u003eExceptional cooling performance\u003c\/li\u003e\n\u003cli data-section-id=\"4hynmi\" data-start=\"4724\" data-end=\"4749\"\u003eReduced unsprung weight\u003c\/li\u003e\n\u003cli data-section-id=\"q3fps5\" data-start=\"4750\" data-end=\"4786\"\u003eRebuildable two-piece construction\u003c\/li\u003e\n\u003cli data-section-id=\"lnh4z0\" data-start=\"4787\" data-end=\"4834\"\u003eOutstanding durability under track conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4836\" data-end=\"4839\"\u003e\n\u003ch3 data-section-id=\"th883x\" data-start=\"4841\" data-end=\"4874\"\u003eWhy Buy from R44 Performance?\u003c\/h3\u003e\n\u003cp data-start=\"4876\" data-end=\"4963\"\u003eR44 Performance supplies premium BMW braking upgrades trusted by enthusiasts worldwide.\u003c\/p\u003e\n\u003cul data-start=\"4965\" data-end=\"5068\"\u003e\n\u003cli data-section-id=\"59t64\" data-start=\"4965\" data-end=\"4982\"\u003eBMW specialists\u003c\/li\u003e\n\u003cli data-section-id=\"prmo11\" data-start=\"4983\" data-end=\"5010\"\u003eGenuine GiroDisc products\u003c\/li\u003e\n\u003cli data-section-id=\"fvo6kf\" data-start=\"5011\" data-end=\"5041\"\u003eFast UK \u0026amp; worldwide shipping\u003c\/li\u003e\n\u003cli data-section-id=\"1jd1uka\" data-start=\"5042\" data-end=\"5068\"\u003eExpert technical support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"5070\" data-end=\"5267\"\u003eUpgrade your braking system with the \u003cstrong data-start=\"5107\" data-end=\"5179\"\u003eGiroDisc 2-Piece Front Brake Discs for the BMW G8X M3, M4 and G87 M2\u003c\/strong\u003e, delivering exceptional cooling performance, reduced weight and track-ready durability.\u003c\/p\u003e","brand":"GiroDisc","offers":[{"title":"Default Title","offer_id":57539551035774,"sku":"A1-282","price":1450.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0280\/7568\/8011\/files\/girodisc-bmw-g80-g81-m3-g82-g83-m4-g87-m2-2-piece-front-brake-discs-rotors-pair-a1-282.jpg?v=1781255066","url":"https:\/\/r44performance.com\/products\/girodisc-bmw-g80-g81-m3-g82-g83-m4-g87-m2-2-piece-front-brake-discs-rotors-pair-a1-282","provider":"R44 Performance","version":"1.0","type":"link"}