{"product_id":"zimmermann-150-2971-70-disc-brake-rotor-front-left","title":"Zimmermann 150.2971.70 Disc Brake Rotor - Front Left","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis Zimmermann disc brake rotor is built for direct fitment on select BMW performance applications. It combines a vented design with a coated surface and high-carbon alloyed machining for consistent braking performance and corrosion resistance.\u003c\/p\u003e\u003cp\u003eFits 2019-2021 BMW M2, front left. Part number 150.2971.70 is identified for this application, and the rotor is ECE R90 approved for regulated replacement use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVented disc brake rotor for improved heat management during repeated stops.\u003c\/li\u003e\n\u003cli\u003eAlloyed high-carbon machining for stable rotor behavior under load.\u003c\/li\u003e\n\u003cli\u003eCoated surface helps resist corrosion on exposed braking surfaces.\u003c\/li\u003e\n\u003cli\u003eAluminium hub floating construction supports precise rotor alignment.\u003c\/li\u003e\n\u003cli\u003eECE R90 approved for replacement brake applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eZimmermann 150.2971.70 is a vented disc brake rotor with a 400 mm outer diameter, 36 mm thickness, and 34.4 mm minimum thickness. The rotor uses a 120 mm bolt hole circle, 79 mm centering diameter, and a 10\/5 hole arrangement, with a 65 mm height. Its alloyed\/high-carbon machining and coated finish are specified for durability and consistent service characteristics. This part number, 150.2971.70, is listed for the front left position on the BMW M2.\u003c\/p\u003e\u003cp\u003eThis rotor is paired with 150.2972.70 and cross-references Monroe Shocks \u0026amp; Struts (e.g., 150.2971.20, 150.2971.52) for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Replacement Reasons\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pulsation from rotor wear or thickness variation.\u003c\/li\u003e\n\u003cli\u003eReduced braking consistency during repeated high-load stops.\u003c\/li\u003e\n\u003cli\u003eCorrosion on the rotor surface affecting service condition.\u003c\/li\u003e\n\u003cli\u003eRotor scoring, cracking, or heat-related damage.\u003c\/li\u003e\n\u003cli\u003eNeed for a direct replacement rotor for BMW M2 brake service.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify rotor dimensions, hub fitment, and mounting pattern before installation. Confirm the front left application on the BMW M2 and compare the existing rotor to part number 150.2971.70 before service. Follow standard brake service procedures and inspect related brake components during replacement.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eZimmermann identifies this rotor as ECE R90 approved, indicating compliance with the applicable replacement brake standard for this application.\u003c\/p\u003e","brand":"Zimmermann","offers":[{"title":"Default Title","offer_id":53534302830773,"sku":"BKND-150.2971.70","price":540.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/ZI_150297170_Fro.jpg?v=1792133364","url":"https:\/\/www.partcatalog.com\/products\/zimmermann-150-2971-70-disc-brake-rotor-front-left","provider":"PartCatalog","version":"1.0","type":"link"}