{"product_id":"dynamite-friction-4512-31257-disc-brake-kit-rear","title":"Dynamite Friction 4512-31257 Disc Brake Kit - Rear","description":"\u003ch2\u003eRear Brake Kit for BMW M Sport Applications\u003c\/h2\u003e\u003cp\u003eThe Dynamite Friction DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware kit is built for rear brake service on select BMW models with M Sport brake packages. Part number 4512-31257 combines coated rotors, ceramic pads, and matching hardware in one service kit for a cleaner brake replacement process.\u003c\/p\u003e\u003cp\u003eCompatible With rear brake service on BMW 230i, 430i, 440i, 328d xDrive, 330i xDrive, 340i, 328i, 428i, 435i, and related xDrive and Gran Coupe applications listed below.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDFC GEOSPEC coated rotors with a silver-gray corrosion-resistant finish\u003c\/li\u003e\n\u003cli\u003eDry-processed rotors that are ready to install without oil removal\u003c\/li\u003e\n\u003cli\u003eG3000\/G11H18 cast iron rotor construction for OE-style durability and stability\u003c\/li\u003e\n\u003cli\u003eNon-directional rotor finish for more even pad bed-in and quieter stops\u003c\/li\u003e\n\u003cli\u003eDFC 5000 Advanced ceramic pads with post-cured friction material\u003c\/li\u003e\n\u003cli\u003eScorched pad surface to reduce initial break-in time\u003c\/li\u003e\n\u003cli\u003ePremium rubber-steel-rubber shims for improved NVH control\u003c\/li\u003e\n\u003cli\u003eHardware kit with PTFE coating, vulcanized rubber, and stainless steel components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Line Details\u003c\/h2\u003e\u003cp\u003eDFC Complete Brake Kits are organized to simplify brake service by combining the rotor, pad, and hardware components needed for a single axle repair. The GEOSPEC rotor line focuses on corrosion protection and OE-spec machining, while the 5000 Advanced pad line is formulated for stable friction performance and smoother operation across a wide range of BMW rear brake applications. Part number 4512-31257 follows that approach for rear brake replacement on BMW M Sport-equipped vehicles.\u003c\/p\u003e\u003ch2\u003eWhat This Brake Kit Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRear brake rotor rust and surface corrosion\u003c\/li\u003e\n\u003cli\u003eBrake noise from worn pads or fatigued hardware\u003c\/li\u003e\n\u003cli\u003eUneven pad bed-in after rotor replacement\u003c\/li\u003e\n\u003cli\u003eReduced braking consistency from aged friction material\u003c\/li\u003e\n\u003cli\u003eCaliper movement issues caused by stressed or corroded hardware\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Fitment\u003c\/h2\u003e\u003cp\u003eFits 2021 BMW 230i, rear; 2021 BMW 230i xDrive, rear; 2021 BMW M240i, rear; 2021 BMW M240i xDrive, rear; 2017-2020 BMW 430i, rear; 2017-2020 BMW 430i xDrive, rear; 2017-2020 BMW 440i, rear; 2017-2020 BMW 440i Gran Coupe, rear; 2017-2020 BMW 440i xDrive, rear; 2017-2020 BMW 440i xDrive Gran Coupe, rear; 2014-2018 BMW 328d xDrive, rear; 2017-2018 BMW 330i xDrive, rear; 2016-2018 BMW 340i, rear; 2018 BMW 340i xDrive, rear; 2016-2017 BMW 340i xDrive, rear; 2016 BMW 328i, rear; 2014-2016 BMW 428i, rear; 2015-2016 BMW 428i Gran Coupe, rear; 2014-2016 BMW 428i xDrive, rear; 2014-2016 BMW 435i, rear; 2015-2016 BMW 435i Gran Coupe, rear; 2014-2016 BMW 435i xDrive, rear; 2015-2016 BMW 435i xDrive Gran Coupe, rear; 2015 BMW 328i, rear; 2014-2015 BMW 335i, rear; 2013-2015 BMW 335i xDrive, rear; 2013-2015 BMW ActiveHybrid 3, rear; 2013-2014 BMW 328i xDrive, rear; 2013 BMW 335i xDrive, rear.\u003c\/p\u003e\u003cp\u003eVerify the rear brake configuration on the vehicle before ordering, since the listed BMW applications include multiple M Sport brake and rotor design variations such as standard rotors, aluminum hat rotors, and optional full cast or dimpled\/slotted rotor setups. Part number 4512-31257 is intended for the rear axle applications shown in the fitment data.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eEach DFC GEOSPEC rotor is machined to tight tolerances, inspected for critical dimensions, and balanced where required. The rotors include a 12-month warranty against defects in material and workmanship.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":52926257922229,"sku":"HBHR-4512-31257","price":266.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_451231257_Fro.jpg?v=1785739524","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-4512-31257-disc-brake-kit-rear","provider":"PartCatalog","version":"1.0","type":"link"}