{"product_id":"dynamite-friction-633-31090l-disc-brake-rotor","title":"Dynamite Friction 633-31090L 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 633-31090L) is engineered for BMW 135i and 135is models. This vented disc brake rotor combines drilled and slotted surface features with a rust-resistant zinc black hat finish to enhance braking performance and durability.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with BMW 135i and 135is models\u003c\/li\u003e\n\u003cli\u003eDirectional, vented disc brake rotor with drilled and slotted surface\u003c\/li\u003e\n\u003cli\u003eNominal thickness of 21.8 mm and discard thickness of 20.4 mm\u003c\/li\u003e\n\u003cli\u003eOverall diameter of 324 mm and height of 77.5 mm\u003c\/li\u003e\n\u003cli\u003eRust-resistant zinc black coating on the hat for corrosion protection\u003c\/li\u003e\n\u003cli\u003e5 bolt holes with 14.7 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 - Black\u003c\/h2\u003e\u003cp\u003eThe DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction is designed to provide enhanced heat dissipation and improved braking response. The drilled holes and slots on the rotor surface help reduce brake fade by allowing gases and debris to escape, while the vented rotor design promotes airflow to maintain optimal operating temperatures. The zinc black finish on the rotor hat offers additional corrosion resistance, extending the rotor's service life under various driving conditions.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications and Features\u003c\/h2\u003e\u003cp\u003eThis disc brake rotor features a nominal thickness of 21.8 mm and a discard thickness of 20.4 mm, ensuring reliable performance throughout its service life. The rotor's outside diameter measures 324 mm, with an overall height of 77.5 mm. It includes five bolt holes, each with a diameter of 14.7 mm, arranged on a 120 mm bolt circle diameter, matching the BMW 135i and 135is wheel hub specifications. The rotor surface is directional, combining drilled and slotted patterns to optimize braking efficiency and reduce heat buildup. The vented rotor design further enhances cooling during heavy braking.\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReduces brake fade during aggressive driving or track use\u003c\/li\u003e\n\u003cli\u003eImproves water and debris evacuation for consistent braking in wet conditions\u003c\/li\u003e\n\u003cli\u003eMinimizes rotor warping by enhancing heat dissipation\u003c\/li\u003e\n\u003cli\u003eProtects against rust and corrosion with zinc black coated hat\u003c\/li\u003e\n\u003cli\u003eRestores braking performance on BMW 135i and 135is vehicles with worn or damaged rotors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with BMW 135i and 135is models before installation\u003c\/li\u003e\n\u003cli\u003eCheck rotor thickness and discard limits to confirm replacement necessity\u003c\/li\u003e\n\u003cli\u003eUse proper torque specifications for the 5 bolt holes (14.7 mm diameter) on the 120 mm bolt circle\u003c\/li\u003e\n\u003cli\u003eInspect brake pads for wear and replace if necessary to maximize rotor performance\u003c\/li\u003e\n\u003cli\u003eFollow manufacturer guidelines for bedding-in new rotors to ensure optimal braking\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDynamite Friction manufactures the 633-31090L rotor to meet or exceed OEM standards for fit, form, and function. The rust-resistant coating and vented design contribute to long-term durability. Warranty details should be confirmed with the point of purchase or manufacturer documentation.\u003c\/p\u003e","brand":"Dynamite Friction","offers":[{"title":"Default Title","offer_id":43389643784373,"sku":"HBHR-633-31090L","price":106.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DF_63331090L_Fro.jpg?v=1774634523","url":"https:\/\/www.partcatalog.com\/products\/dynamite-friction-633-31090l-disc-brake-rotor","provider":"PartCatalog","version":"1.0","type":"link"}