{"product_id":"dynamite-friction-631-31097l-disc-brake-rotor-front-left","title":"Dynamite Friction 631-31097L Disc Brake Rotor - Front Left","description":"\u003ch2\u003eOverview of Dynamite Friction DFC Brake Rotor\u003c\/h2\u003e\u003cp\u003eThe Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31097L) is engineered for BMW models including the 535d, 535d xDrive, 535i, 535i xDrive, 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe, and ActiveHybrid 5. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNominal thickness: 30 mm with a discard thickness of 28.4 mm\u003c\/li\u003e\n\u003cli\u003eVented rotor design for improved cooling\u003c\/li\u003e\n\u003cli\u003eDirectional slotted and drilled surface for debris removal and consistent pad contact\u003c\/li\u003e\n\u003cli\u003eRust-resistant zinc silver hat finish and plain disc finish\u003c\/li\u003e\n\u003cli\u003e5 bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eOverall diameter of 348 mm and height of 66.5 mm\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter of 75 mm for precise fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis DFC Brake Rotor - Drilled and Slotted - Silver from Dynamite Friction is designed to meet the specific braking requirements of select BMW vehicles. The rotor’s vented construction allows for efficient heat dissipation during braking, reducing the risk of brake fade under demanding conditions. The directional slotted and drilled surface improves water and gas evacuation, maintaining consistent braking performance. The zinc silver coating on the rotor hat provides corrosion resistance, extending the rotor’s service life. With a nominal thickness of 30 mm and a discard thickness of 28.4 mm, this rotor ensures durability and safety throughout its lifespan.\u003c\/p\u003e\u003ch2\u003eDFC Brake Rotor Product Line Features\u003c\/h2\u003e\u003cp\u003eThe DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and slots to optimize braking efficiency and rotor cooling. This product line is engineered to provide reliable performance for vehicles requiring vented rotors with directional surfaces, such as the BMW 535i and 640i series. The silver zinc coating enhances rust resistance, making these rotors suitable for various driving conditions.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompatible with BMW 535d, 535d xDrive, 535i, 535i xDrive, 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe, and ActiveHybrid 5 models\u003c\/li\u003e\n\u003cli\u003eAddresses brake fade caused by excessive heat buildup\u003c\/li\u003e\n\u003cli\u003eReduces brake dust and debris accumulation on rotor surface\u003c\/li\u003e\n\u003cli\u003eImproves wet weather braking performance by evacuating water\u003c\/li\u003e\n\u003cli\u003eMinimizes rotor warping through enhanced cooling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the rotor surface is clean and free of contaminants before installation. Verify the bolt hole pattern matches the vehicle’s hub (5 holes, 16.6 mm diameter, 120 mm bolt circle diameter). Use proper torque specifications for lug nuts to avoid rotor damage. It is recommended to replace brake pads when installing new rotors to maintain optimal braking performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDynamite Friction manufactures the 631-31097L rotor to meet or exceed OEM specifications for fit, form, and function. The rust-resistant zinc silver coating helps extend rotor life. While no specific warranty information is provided, Dynamite Friction products are subject to quality control standards to ensure reliable performance on BMW vehicles.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":51715966861493,"sku":"HBHR-631-31097L","price":125.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63131097L_Fro.jpg?v=1774634396","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-631-31097l-disc-brake-rotor-front-left","provider":"PartCatalog","version":"1.0","type":"link"}