Dynamite Friction 640-31108 Disc Brake Rotor - Front

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Dimpled and Slotted (part number 640-31108) is engineered for precision braking performance on select BMW models. Designed as a vented disc brake rotor, it offers enhanced heat dissipation and consistent stopping power for vehicles such as the BMW 330i, 335i xDrive, and 440i xDrive.

• Vented rotor design for improved cooling
• Dimpled and slotted surface to reduce brake fade
• Nominal thickness of 30 mm with a discard thickness of 28.4 mm
• Outside diameter of 340 mm and inside diameter of 79 mm
• Five bolt holes with a diameter of 16.6 mm
• Height of 73.6 mm for precise fitment

Detailed Product Features and Specifications

This disc brake rotor is part of the DFC Brake Rotor - Dimpled and Slotted line by Dynamite Friction, which focuses on rotors designed to improve braking efficiency through enhanced surface design. The dimpled and slotted pattern helps to evacuate gases, dust, and water from the rotor surface, reducing the risk of brake fade and maintaining consistent friction during heavy braking. The vented construction allows air to flow between the rotor faces, promoting heat dissipation and reducing the chance of warping under high temperatures.

With a nominal thickness of 30 mm and a discard thickness of 28.4 mm, this rotor ensures durability and longevity while maintaining safety standards. The rotor’s 340 mm outside diameter and 79 mm inside diameter are engineered to match the specific brake system requirements of compatible BMW models. The five bolt holes, each 16.6 mm in diameter, provide secure mounting and alignment.

Compatible BMW Models and Applications

This rotor is compatible with a range of BMW vehicles, including but not limited to the 118i, 120i, 230i, 328i, 330i, 335i, 340i, 428i, 430i, 435i, 440i, and M-series variants such as the M135i and M240i. It is suitable for models with both rear-wheel drive and xDrive all-wheel drive configurations.

• Improves braking performance on BMW 335i xDrive and 330i models
• Reduces brake fade during aggressive driving or towing
• Helps prevent rotor warping caused by excessive heat
• Maintains consistent brake pad contact and friction
• Addresses vibration or pulsation issues related to rotor surface wear

Installation Notes and Tips

When installing the Dynamite Friction DFC Brake Rotor (640-31108), ensure the rotor surface is clean and free of any protective coatings or debris before mounting. Verify that the rotor thickness is within the specified nominal and discard limits to maintain safety and performance. Proper torque specifications should be followed for the five bolt holes to ensure secure attachment. It is recommended to inspect brake pads and other related components during installation for optimal braking system performance.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC Brake Rotor - Dimpled and Slotted to meet or exceed OEM standards for fit, form, and function. The vented rotor design and precise manufacturing tolerances contribute to reliable braking performance. While specific warranty details are not provided, Dynamite Friction products typically adhere to industry quality controls to ensure durability and safety on BMW vehicles.