{"product_id":"durago-br900934-disc-brake-rotor","title":"DuraGo BR900934 Disc Brake Rotor - Front","description":"\u003ch2\u003eDurable Disc Brake Rotor for BMW 5 and 6 Series\u003c\/h2\u003e\u003cp\u003eThe DuraGo BR900934 disc brake rotor is engineered for reliable braking performance on select BMW models. Designed with a composite construction featuring a cast iron braking surface and an aluminum hat, this rotor balances strength and weight for consistent stopping power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComposite construction with cast iron friction surface and aluminum hat\u003c\/li\u003e\n\u003cli\u003eVented rotor design for improved heat dissipation\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 1.18 inches (30 mm) with discard thickness at 1.12 inches (28.4 mm)\u003c\/li\u003e\n\u003cli\u003eOutside diameter of 13.7 inches (348 mm) suitable for BMW 535i, 545i, 550i, 645Ci, and 650i\u003c\/li\u003e\n\u003cli\u003eFive mounting bolt holes with a 4.72 inch (120 mm) bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eNon-directional brake surface for versatile installation\u003c\/li\u003e\n\u003cli\u003eConventional solid rotor type without cross-drilling or slots\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Details and Construction\u003c\/h2\u003e\u003cp\u003eThe BR900934 rotor features a composite design combining a durable cast iron braking surface with a lightweight aluminum hat. This combination helps reduce unsprung weight while maintaining structural integrity. The vented rotor design enhances cooling by allowing air to flow between the rotor faces, reducing the risk of brake fade during extended use. With a nominal thickness of 1.18 inches and a discard thickness of 1.12 inches, this rotor meets OEM specifications for thickness and wear limits. The rotor's overall height measures 3.03 inches (77 mm), and it includes five mounting bolt holes with a 0.57 inch (14.6 mm) diameter, arranged on a 4.72 inch (120 mm) bolt circle diameter. The center hole diameter is 3.11 inches (79 mm), ensuring proper fitment on compatible BMW hubs.\u003c\/p\u003e\u003ch2\u003eCompatible BMW Models and Applications\u003c\/h2\u003e\u003cp\u003eThis DuraGo disc brake rotor is compatible with the following BMW models:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW 535i\u003c\/li\u003e\n\u003cli\u003eBMW 545i\u003c\/li\u003e\n\u003cli\u003eBMW 550i\u003c\/li\u003e\n\u003cli\u003eBMW 645Ci\u003c\/li\u003e\n\u003cli\u003eBMW 650i\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to replace original equipment rotors on these vehicles, providing consistent braking performance for daily driving and highway use.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Rotor\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake rotor warping causing vibration during braking\u003c\/li\u003e\n\u003cli\u003eExcessive rotor wear leading to reduced braking efficiency\u003c\/li\u003e\n\u003cli\u003eOverheating and brake fade from insufficient heat dissipation\u003c\/li\u003e\n\u003cli\u003eCorrosion and surface damage affecting rotor lifespan\u003c\/li\u003e\n\u003cli\u003eUneven braking due to rotor surface irregularities\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the rotor thickness is above the discard thickness before installation\u003c\/li\u003e\n\u003cli\u003eClean the rotor surface to remove any protective coatings or contaminants\u003c\/li\u003e\n\u003cli\u003eTorque mounting bolts to manufacturer specifications to avoid rotor distortion\u003c\/li\u003e\n\u003cli\u003eInspect brake pads and replace if worn to ensure optimal rotor performance\u003c\/li\u003e\n\u003cli\u003eCheck hub surface for rust or debris to ensure proper rotor seating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDuraGo brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. While this product does not include a rust-resistant coating, the composite construction and material selection provide durability under normal operating conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.\u003c\/p\u003e","brand":"DuraGo","offers":[{"title":"Default Title","offer_id":43585204682933,"sku":"GVMP-BR900934","price":127.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/PR_BR900934_Fro.jpg?v=1774635066","url":"https:\/\/www.partcatalog.com\/products\/durago-br900934-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}