{"product_id":"dynamite-friction-631-31139r-disc-brake-rotor-front-right","title":"Dynamite Friction 631-31139R Disc Brake Rotor - Front Right","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 631-31139R) is engineered for BMW X3 models requiring reliable braking performance. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power under demanding conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with BMW X3 vehicles\u003c\/li\u003e\n\u003cli\u003eVented disc design for improved cooling\u003c\/li\u003e\n\u003cli\u003eDirectional drilled and slotted surface for enhanced brake pad bite and debris removal\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 25 mm with a discard thickness of 23.4 mm\u003c\/li\u003e\n\u003cli\u003eRust-resistant zinc silver hat finish for corrosion protection\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 325 mm and height of 62.3 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetails on the DFC Brake Rotor - Drilled and Slotted - Silver Line\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 on the braking surface. This design improves water and gas evacuation during braking, reducing brake fade and maintaining consistent performance. The silver zinc coating on the rotor hat provides additional rust resistance, extending the rotor's service life, especially in environments prone to corrosion.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications and Features\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor is vented, allowing air to flow between the rotor surfaces to dissipate heat more effectively during braking. The rotor's directional surface pattern, featuring both drilled holes and slots, is optimized for the BMW X3's braking system. The rotor measures 325 mm in outside diameter and 62.3 mm in height, with a center hole diameter of 75 mm. It includes five bolt holes, each 16.6 mm in diameter, arranged on a 120 mm bolt circle diameter, matching the BMW X3's hub specifications.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplaces worn or warped rotors on BMW X3 models\u003c\/li\u003e\n\u003cli\u003eImproves brake cooling to reduce fade during heavy braking\u003c\/li\u003e\n\u003cli\u003eEnhances braking performance in wet conditions by evacuating water\u003c\/li\u003e\n\u003cli\u003eReduces brake dust buildup with slotted surface design\u003c\/li\u003e\n\u003cli\u003ePrevents rust and corrosion on rotor hats for longer durability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the rotor is compatible with your specific BMW X3 model year and brake system before installation. Clean the hub surface thoroughly to prevent rotor runout. Torque the bolts to manufacturer specifications using the 5-bolt pattern with 16.6 mm diameter holes on a 120 mm bolt circle. The directional rotor surface should be installed following the indicated rotation direction for optimal performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDynamite Friction manufactures this rotor with rust-resistant coatings and precise machining to meet OEM fitment standards. While specific warranty details are not provided, the rotor is designed to maintain structural integrity and braking performance under normal operating conditions for BMW X3 vehicles.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":51794116968629,"sku":"HBHR-631-31139R","price":125.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63131139R_Fro.jpg?v=1774641380","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-631-31139r-disc-brake-rotor-front-right","provider":"PartCatalog","version":"1.0","type":"link"}