{"product_id":"dynamite-friction-631-31066l-disc-brake-rotor-rear-left","title":"Dynamite Friction 631-31066L Disc Brake Rotor - Rear 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 631-31066L) is engineered for BMW 525i, 528i, and 530i models. 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\u003eCompatible with BMW 525i, 528i, and 530i\u003c\/li\u003e\n\u003cli\u003ePart Number: 631-31066L\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor with drilled and slotted surface\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 20 mm; discard thickness: 18.4 mm\u003c\/li\u003e\n\u003cli\u003eOverall diameter: 320 mm; height: 63.1 mm\u003c\/li\u003e\n\u003cli\u003eRust resistant zinc silver hat finish\u003c\/li\u003e\n\u003cli\u003e5 bolt holes with 14.7 mm diameter and 120 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eDirectional brake surface for optimized performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Line Details: DFC Brake Rotor - Drilled and Slotted - Silver\u003c\/h2\u003e\u003cp\u003eThe DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction offers rotors with enhanced surface features including drilled holes and slots. These design elements improve heat dissipation and help reduce brake fade under demanding conditions. The zinc silver hat finish provides corrosion resistance, extending rotor life. This product line is tailored for drivers seeking reliable braking performance with a focus on durability and consistent stopping power.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications and Features\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor is vented to allow better airflow and heat management during braking. The rotor’s nominal thickness is 20 mm, with a discard thickness of 18.4 mm, ensuring safe replacement intervals. The rotor measures 320 mm in outside diameter and 63.1 mm in overall height, fitting precisely on compatible BMW models. The rotor surface is both drilled and slotted, which aids in removing brake dust and gases, improving pad contact and braking efficiency. The hat section features a rust-resistant zinc silver coating to protect against corrosion. The rotor includes five bolt holes with a diameter of 14.7 mm arranged on a 120 mm bolt circle diameter, matching the stud\/lug hole pattern of the specified BMW vehicles.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement rotor for worn or warped brake rotors on BMW 525i, 528i, and 530i\u003c\/li\u003e\n\u003cli\u003eImproves heat dissipation to reduce brake fade during aggressive driving or heavy braking\u003c\/li\u003e\n\u003cli\u003eHelps maintain consistent braking performance by reducing pad glazing and brake dust buildup\u003c\/li\u003e\n\u003cli\u003eCorrosion resistance extends rotor lifespan in humid or salty environments\u003c\/li\u003e\n\u003cli\u003eDirectional design supports optimal braking efficiency and rotor longevity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the rotor thickness is above the discard thickness of 18.4 mm before installation. Clean the rotor surface to remove any protective coatings or oils prior to mounting. Verify bolt hole alignment with the 5-lug, 120 mm bolt circle pattern on your BMW 525i, 528i, or 530i. Use proper torque specifications for lug nuts to avoid rotor warping. It is recommended to replace brake pads when installing new rotors to ensure optimal braking performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDynamite Friction manufactures the 631-31066L rotor to meet or exceed OEM specifications for fitment and performance on BMW 525i, 528i, and 530i models. The rust-resistant zinc silver finish helps protect against corrosion, contributing to longer service life. While no specific warranty information is provided, this rotor is designed for durability and consistent braking under normal operating conditions.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":51794115264693,"sku":"HBHR-631-31066L","price":96.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63131066L_Fro.jpg?v=1774641364","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-631-31066l-disc-brake-rotor-rear-left","provider":"PartCatalog","version":"1.0","type":"link"}