Dynamite Friction 644-31196D Disc Brake Rotor - Rear Left

High-Performance Disc Brake Rotor for BMW Models

The Dynamite Friction DFC GEOSPEC Coated Rotor - Dimpled and Slotted (part number 644-31196D) is engineered to provide reliable braking performance for select BMW vehicles. Designed specifically for models such as the 430i, 430i xDrive, M340i, M340i xDrive, M440i, and M440i xDrive, this rotor offers enhanced heat dissipation and consistent stopping power.

• Plain disc finish for a clean, functional surface
• 345 mm outside diameter optimized for specified BMW models
• Directional slotted and dimpled surface to improve brake pad contact and reduce brake fade
• Directional brake surface designed to channel gases and debris away efficiently
• Part number 644-31196D ensures exact fitment and compatibility

About the DFC GEOSPEC Coated Rotor - Dimpled and Slotted Line

The DFC GEOSPEC Coated Rotor - Dimpled and Slotted line by Dynamite Friction focuses on rotors that combine surface treatments to enhance braking performance. The dimpled and slotted design helps maintain pad cleanliness and improves heat dissipation, which is critical for maintaining consistent braking under demanding conditions. This product line is tailored for drivers seeking rotors that balance durability with effective braking response on BMW 4 Series and 3 Series models.

Product Details and Specifications

This disc brake rotor features a plain finish that supports a stable braking surface without additional coatings that may wear unevenly. The 345 mm outside diameter matches the OEM specifications for the listed BMW models, ensuring proper fit and function. The slotted and dimpled surface design is directional, meaning it is optimized to rotate in a specific direction to maximize the removal of brake dust, gases, and water from the rotor surface. This directional design helps maintain consistent pad contact and reduces the risk of brake fade during aggressive driving or heavy braking scenarios.

Applications and Problem Solving

• Compatible with BMW 430i, 430i xDrive, M340i, M340i xDrive, M440i, and M440i xDrive models
• Addresses brake fade caused by excessive heat buildup
• Reduces brake dust accumulation on rotor surface
• Improves wet weather braking performance by channeling water away
• Helps maintain consistent brake pad contact for smoother stops

Installation Notes and Tips

Ensure the rotor is installed with the directional surface rotating correctly according to the vehicle’s forward motion. Verify that the rotor’s 345 mm diameter matches the OEM specifications for your BMW model. It is recommended to inspect brake pads and hardware during installation to ensure optimal braking system performance. Proper torque specifications should be followed to avoid rotor warping or uneven wear.

Quality Assurance and Warranty

Dynamite Friction manufactures the 644-31196D rotor to meet or exceed OEM standards for fit and function. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure durability and performance. For warranty information, consult the manufacturer or authorized distributor.