{"product_id":"dynamite-friction-631-31106l-disc-brake-rotor-rear-left","title":"Dynamite Friction 631-31106L 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 631-31106L) is engineered for BMW models including the 535i, 550i, 640i, 650i, and 7 Series variants. 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 535i, 535i GT, 550i, 640i, 650i, 740i, and ActiveHybrid 7 models\u003c\/li\u003e\n\u003cli\u003ePart Number: 631-31106L\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor with drilled and slotted surface\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 23.8 mm; discard thickness: 22.4 mm\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 345 mm; overall height: 69.1 mm\u003c\/li\u003e\n\u003cli\u003eDirectional brake surface with zinc silver hat finish and rust-resistant coating\u003c\/li\u003e\n\u003cli\u003e5 bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter\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 is designed to provide reliable braking performance with enhanced heat dissipation and reduced brake fade. The drilled and slotted surface improves water and debris evacuation, while the vented rotor design helps maintain optimal operating temperatures. The zinc silver hat finish and rust-resistant coating contribute to durability and corrosion resistance, making this rotor suitable for BMW vehicles requiring precise fitment and consistent braking response.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications and Features\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor is vented to allow better airflow and heat dissipation during braking, which helps prevent warping and extends rotor life. The rotor’s nominal thickness is 23.8 mm, with a discard thickness of 22.4 mm, ensuring safe replacement intervals. The rotor measures 345 mm in outside diameter and 69.1 mm in overall height, matching OEM specifications for proper fitment. The directional slotted and drilled surface enhances braking by improving pad bite and reducing gas buildup. The zinc silver hat finish and rust-resistant coating protect against corrosion, maintaining rotor integrity over time. The rotor features 5 bolt holes with a diameter of 16.6 mm and a bolt circle diameter of 120 mm, compatible with specified BMW models.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors on BMW 535i, 550i, 640i, 650i, and 7 Series vehicles\u003c\/li\u003e\n\u003cli\u003eImproves braking performance under high heat conditions\u003c\/li\u003e\n\u003cli\u003eReduces brake fade caused by gas and debris buildup\u003c\/li\u003e\n\u003cli\u003ePrevents rust and corrosion on rotor surfaces\u003c\/li\u003e\n\u003cli\u003eEnsures proper fitment and alignment with OEM bolt pattern and dimensions\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 22.4 mm before installation. Clean the rotor surface to remove any protective coatings or contaminants prior to mounting. Verify bolt hole alignment with the vehicle’s hub using the 5-bolt, 120 mm bolt circle pattern. Use proper torque specifications for lug nuts to avoid rotor warping. It is recommended to replace brake pads simultaneously to ensure optimal braking performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDynamite Friction rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The rust-resistant coating and zinc silver hat finish provide added durability against environmental factors. While specific warranty details are not provided, Dynamite Friction products are designed for consistent performance and reliability in BMW brake systems.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":51794116149429,"sku":"HBHR-631-31106L","price":128.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63131106L_Fro.jpg?v=1774641372","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-631-31106l-disc-brake-rotor-rear-left","provider":"PartCatalog","version":"1.0","type":"link"}