{"product_id":"dynamite-friction-633-31047l-disc-brake-rotor-rear-left","title":"Dynamite Friction 633-31047L 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 - Black (part number 633-31047L) is engineered for BMW 323i, 325Ci, 325i, 328Ci, and 328i 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 323i, 325Ci, 325i, 328Ci, and 328i\u003c\/li\u003e\n\u003cli\u003ePart number 633-31047L\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor with directional drilled and slotted surface\u003c\/li\u003e\n\u003cli\u003eOverall diameter: 294 mm; nominal thickness: 19 mm; discard thickness: 17.4 mm\u003c\/li\u003e\n\u003cli\u003eHat finish in zinc black with rust-resistant coating\u003c\/li\u003e\n\u003cli\u003e5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eCenter hole diameter: 75 mm; overall height: 59.7 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDFC Brake Rotor - Drilled and Slotted - Black Product Line\u003c\/h2\u003e\u003cp\u003eThe DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on rotors that combine drilled holes and slots on a vented disc design. This configuration improves heat dissipation and helps reduce brake fade under demanding conditions. The zinc black hat finish and rust-resistant coating provide added durability against corrosion, making these rotors suitable for daily driving and spirited use on compatible BMW models.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications and Features\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor is vented to allow better airflow and cooling during braking. The directional surface features both drilled holes and slots, which aid in removing brake dust, gases, and water from the rotor surface. The rotor’s nominal thickness is 19 mm, with a discard thickness of 17.4 mm, ensuring a clear service limit for safe operation. The rotor measures 294 mm in outside diameter and 59.7 mm in overall height, fitting precisely on BMW 323i, 325Ci, 325i, 328Ci, and 328i models. The 5-bolt hole pattern with a 120 mm bolt circle diameter and 14.6 mm bolt hole diameter matches factory specifications for secure mounting.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or warped rotors on BMW 3 Series models 323i, 325Ci, 325i, 328Ci, and 328i\u003c\/li\u003e\n\u003cli\u003eImproves heat dissipation to reduce brake fade during aggressive driving\u003c\/li\u003e\n\u003cli\u003eHelps eliminate brake judder caused by uneven rotor surfaces\u003c\/li\u003e\n\u003cli\u003eRust-resistant coating protects against corrosion in humid or wet environments\u003c\/li\u003e\n\u003cli\u003eDirectional drilled and slotted design assists in maintaining consistent braking performance in wet conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the rotor is installed with the directional surface facing the correct rotation direction as indicated by the arrow on the rotor. Verify that the bolt hole pattern and center hole diameter match the vehicle hub specifications. It is recommended to replace brake pads when installing new rotors to maintain optimal braking performance. Check rotor thickness before installation to confirm it meets or exceeds the nominal thickness of 19 mm and is above the discard thickness of 17.4 mm.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDynamite Friction manufactures the 633-31047L rotor to meet OEM standards for fit, form, and function. The rust-resistant coating and zinc black hat finish contribute to the rotor’s durability. While specific warranty details are not provided, Dynamite Friction products typically adhere to industry quality controls to ensure reliable braking performance on compatible BMW models.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":51797403730101,"sku":"HBHR-633-31047L","price":90.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63331047L_Fro.jpg?v=1774641898","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-633-31047l-disc-brake-rotor-rear-left","provider":"PartCatalog","version":"1.0","type":"link"}