{"product_id":"2-piece-rotor-rear-370x24-m2-g87-m3-g80-m4-g82-g83-iron-conversion-pit","title":"Paragon 2-piece Rotors Rear Pair 370x24mm (14.57x0.94\") - BMW M2 (G87) \/ M3 (G80) \/ M4 (G82\/G83) Iron Conversion","description":"\u003cstyle\u003e.pit-paragon-pdp h2{font-size:22px!important;line-height:1.3!important;margin:28px 0 12px!important}.pit-paragon-pdp h3{font-size:18px!important;line-height:1.4!important}.pit-paragon-pdp .pit-paragon-table{max-width:100%;overflow-x:auto;margin:16px 0}.pit-paragon-pdp table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.5}.pit-paragon-pdp caption{text-align:left;font-weight:600;padding:0 0 10px}.pit-paragon-pdp th,.pit-paragon-pdp td{padding:10px 12px;border:1px solid #dedede;text-align:left;vertical-align:top;overflow-wrap:anywhere}.pit-paragon-pdp th{width:32%;font-weight:600}.pit-paragon-pdp details{border-top:1px solid #dedede;padding:14px 0}.pit-paragon-pdp details:last-child{border-bottom:1px solid #dedede}.pit-paragon-pdp summary{cursor:pointer;font-size:16px!important;line-height:1.5;font-weight:600;list-style-position:outside;margin-left:18px}.pit-paragon-pdp details p{margin:12px 0 0;line-height:1.65}@media(max-width:749px){.pit-paragon-pdp h2{font-size:20px!important}.pit-paragon-pdp h3{font-size:17px!important}.pit-paragon-pdp th,.pit-paragon-pdp td{padding:8px}.pit-paragon-pdp summary{font-size:15px!important}}\u003c\/style\u003e\u003cdiv class=\"pit-paragon-pdp\"\u003e\n\u003cp\u003eParagon 370x24mm rear two-piece rotors are supplied as a pair for BMW G87 M2 \/ G80 M3 \/ G82 M4. This is an iron conversion for the factory carbon-ceramic calipers, with a specific iron-pad requirement.\u003c\/p\u003e\n\u003ch2\u003eRotor specifications and fitment\u003c\/h2\u003e\n\u003cdiv class=\"pit-paragon-table\"\u003e\u003ctable\u003e\n\u003ccaption\u003eG87\/G8X rear rotor specifications\u003c\/caption\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVehicle application\u003c\/th\u003e\n\u003ctd\u003eBMW G87 M2 \/ G80 M3 \/ G82 M4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAxle \/ quantity\u003c\/th\u003e\n\u003ctd\u003eRear \/ two rotor assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRotor diameter × thickness\u003c\/th\u003e\n\u003ctd\u003e370x24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRequired brake system\u003c\/th\u003e\n\u003ctd\u003eFactory M Carbon Ceramic calipers; use the manufacturer-specified factory iron-brake pad shape\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRotor construction\u003c\/th\u003e\n\u003ctd\u003eFloating two-piece construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRotor ring material\u003c\/th\u003e\n\u003ctd\u003eCM-250 high-carbon alloy cast iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHat material\u003c\/th\u003e\n\u003ctd\u003e6061-T6 aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRotor-to-hat mounting\u003c\/th\u003e\n\u003ctd\u003eD-Bobbin (10 bolt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eDesign and serviceability\u003c\/h2\u003e\n\u003cp\u003eThe iron friction ring and aluminum hat separate the rotor’s braking surface from its mounting section. CM-250 iron is heat treated and surface machined, while the aluminum hat provides a lightweight mounting structure. The slotted face helps maintain a clean pad contact surface during braking.\u003c\/p\u003e\n\u003cp\u003eThe floating ring-to-hat connection allows thermal expansion as brake temperatures rise. Directional internal vanes guide cooling air through the rotor; install each assembly on its specified side.\u003c\/p\u003e\n\u003ch2\u003eBrake-package requirements\u003c\/h2\u003e\n\u003cp\u003eFactory M Carbon Ceramic calipers; use the manufacturer-specified factory iron-brake pad shape.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequired pad shape: Paragon PBP1296 \/ factory iron-brake shape.\u003c\/strong\u003e The original carbon-ceramic pad shape is not compatible with this conversion. Confirm both caliper and pad specification before installation.\u003c\/p\u003e\n\u003ch2\u003eHat finish and installation\u003c\/h2\u003e\n\u003cp\u003eAvailable hat finish: Mil-Spec Black Hard Coat Anodizing; Mil-Spec Hard Coat Anodizing. Paragon recommends the undyed hard-anodized finish for heavy track use because dyed black hats can discolor under high heat. Choose for your use case, then follow the \u003ca href=\"https:\/\/paragonbrakes.com\/content\/Paragon%20Performance%202-piece%20Rotor%20Installation%20Instructions.pdf\" target=\"_blank\" rel=\"noopener\" style=\"text-decoration:underline\"\u003eParagon general rotor installation and bedding guide (PDF)\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eWhat is included\u003c\/h2\u003e\n\u003cp\u003eTwo assembled rotor units for the listed axle and access to the \u003ca href=\"https:\/\/paragonbrakes.com\/content\/Paragon%20Performance%202-piece%20Rotor%20Installation%20Instructions.pdf\" target=\"_blank\" rel=\"noopener\" style=\"text-decoration:underline\"\u003eParagon general rotor installation and bedding guide (PDF)\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eProduct FAQs\u003c\/h2\u003e\n\u003cdiv class=\"pit-paragon-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eAre these 370x24mm rotors for the front or rear?\u003c\/summary\u003e\u003cp\u003eThis listing is for the rear axle and includes two rotor assemblies for BMW G87 M2 \/ G80 M3 \/ G82 M4.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhich brake system do they fit?\u003c\/summary\u003e\u003cp\u003eFactory M Carbon Ceramic calipers; use the manufacturer-specified factory iron-brake pad shape. Match the installed hardware, not just the vehicle model.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs this a complete brake kit?\u003c\/summary\u003e\u003cp\u003eNo. This listing supplies a rotor pair. Calipers and brake pads are not included.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I reuse my carbon-ceramic pads?\u003c\/summary\u003e\u003cp\u003eNo. This conversion requires the factory iron-brake pad shape: PBP1296 for the rear axle. The OEM carbon-ceramic pad shape is incompatible.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Paragon Performance","offers":[{"title":"Mil-Spec Black Hard Coat Anodizing","offer_id":67929841434912,"sku":"P2R.282.370.240.22100.08.01.01.R","price":1150.0,"currency_code":"USD","in_stock":true},{"title":"Mil-Spec Hard Coat Anodizing","offer_id":67929841467680,"sku":"P2R.282.370.240.22100.08.01.02.R","price":1150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/9339\/1392\/files\/g8x-m2-m3-m4-iron-conversion-2-pc-rear-brake-rotor-disc-1__01741.1784619889.jpg?v=1792727874","url":"https:\/\/ridgelinemotorsport.com\/products\/2-piece-rotor-rear-370x24-m2-g87-m3-g80-m4-g82-g83-iron-conversion-pit","provider":"Ridgeline Motorsport","version":"1.0","type":"link"}