{"product_id":"dynamite-friction-631-31053l-disc-brake-rotor-rear-left","title":"Dynamite Friction 631-31053L Disc Brake Rotor - Rear Left","description":"\u003ch2\u003eOverview of DFC Brake Rotor - Drilled and Slotted - Silver\u003c\/h2\u003e\u003cp\u003eThe Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31053L) is engineered for BMW 330Ci, 330i, and 330xi 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 330Ci, 330i, and 330xi\u003c\/li\u003e\n\u003cli\u003ePart number 631-31053L\u003c\/li\u003e\n\u003cli\u003eVented disc brake rotor with drilled and slotted surface\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 21.8 mm; discard thickness: 20.4 mm\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 320 mm; overall height: 60.5 mm\u003c\/li\u003e\n\u003cli\u003e5 bolt holes with 14.7 mm diameter; bolt circle diameter: 120 mm\u003c\/li\u003e\n\u003cli\u003eZinc silver hat finish with rust-resistant coating\u003c\/li\u003e\n\u003cli\u003eDirectional brake surface for optimized performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThis DFC Brake Rotor - Drilled and Slotted - Silver is constructed with a vented design to improve airflow and reduce heat buildup during braking. The rotor measures 320 mm in outside diameter and 60.5 mm in overall height, ensuring proper fitment and clearance for the specified BMW models. The nominal thickness of 21.8 mm and discard thickness of 20.4 mm provide clear service limits for maintenance.\u003c\/p\u003e\u003cp\u003eThe rotor surface is both drilled and slotted, which helps to evacuate gases, dust, and water, improving braking consistency and reducing brake fade. The directional surface design is intended to optimize the rotor’s performance when installed in the correct orientation. The hat section features a zinc silver finish with a rust-resistant coating to help prevent corrosion and extend rotor life.\u003c\/p\u003e\u003ch2\u003eDFC Brake Rotor - Drilled and Slotted - Silver Product Line\u003c\/h2\u003e\u003cp\u003eThe DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction focuses on rotors that combine drilled holes and slots with a vented design. This combination is aimed at enhancing heat dissipation and maintaining braking efficiency under demanding conditions. The silver zinc coating on the hat provides additional protection against rust, making these rotors suitable for drivers seeking reliable performance and durability on BMW 330 series vehicles.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eImproves braking performance for BMW 330Ci, 330i, and 330xi models\u003c\/li\u003e\n\u003cli\u003eReduces brake fade caused by heat buildup during aggressive driving\u003c\/li\u003e\n\u003cli\u003eHelps prevent rotor warping and uneven wear\u003c\/li\u003e\n\u003cli\u003eMinimizes brake dust and gas buildup for consistent pedal feel\u003c\/li\u003e\n\u003cli\u003eProtects against rust and corrosion to extend rotor lifespan\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure rotor orientation matches the directional surface marking for optimal performance\u003c\/li\u003e\n\u003cli\u003eCheck rotor thickness before installation; replace if below discard thickness of 20.4 mm\u003c\/li\u003e\n\u003cli\u003eClean rotor surface before installation to remove any protective coatings or contaminants\u003c\/li\u003e\n\u003cli\u003eVerify bolt hole alignment with vehicle hub using the 5-bolt pattern and 120 mm bolt circle diameter\u003c\/li\u003e\n\u003cli\u003eTorque lug nuts to manufacturer specifications to avoid rotor damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDynamite Friction manufactures the 631-31053L rotor to meet strict quality standards for fitment and performance on BMW 330Ci, 330i, and 330xi models. The rust-resistant zinc silver coating and vented rotor design contribute to durability and consistent braking. Warranty details are provided by Dynamite Friction and should be confirmed at the time of purchase.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":51794114674869,"sku":"HBHR-631-31053L","price":106.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63131053L_Fro.jpg?v=1774641359","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-631-31053l-disc-brake-rotor-rear-left","provider":"PartCatalog","version":"1.0","type":"link"}