Dynamite Friction 644-31113 Disc Brake Rotor - Rear

Overview of Dynamite Friction DFC GEOSPEC Coated Rotor

The Dynamite Friction DFC GEOSPEC Coated Rotor - Dimpled and Slotted (part number 644-31113) is engineered for precision braking performance. Designed specifically for select BMW models, this vented disc brake rotor offers reliable heat dissipation and consistent stopping power.

• Compatible with BMW 118i, 120i, 230i, 230i xDrive, 328i, 428i, M135i, M140i, M235i, M235i xDrive, M240i, and M240i xDrive
• Vented rotor design with dimpled and slotted surface for improved cooling and debris removal
• Nominal thickness of 24 mm and discard thickness of 22.4 mm for safe rotor replacement
• Outside diameter of 344 mm and inside diameter of 75 mm
• Five bolt holes with a diameter of 16.6 mm for secure fitment
• Height of 66.3 mm ensuring proper alignment and compatibility

Detailed Product Description

This disc brake rotor, part number 644-31113, is a vented type rotor designed to enhance braking efficiency by allowing better airflow and heat dissipation. The dimpled and slotted surface pattern helps reduce brake fade by channeling away dust, gas, and water from the rotor surface. With a nominal thickness of 24 mm and a discard thickness of 22.4 mm, this rotor maintains structural integrity and safety throughout its service life. The rotor’s dimensions, including an outside diameter of 344 mm and an inside diameter of 75 mm, are tailored to fit a range of BMW models, ensuring precise fitment and optimal braking performance.

DFC GEOSPEC Coated Rotor - Dimpled and Slotted Product Line

The DFC GEOSPEC Coated Rotor - Dimpled and Slotted line from Dynamite Friction focuses on rotors that combine advanced surface treatments with performance-enhancing features. The coating provides corrosion resistance, extending rotor life, while the dimpled and slotted design improves braking response and heat management. This product line is suitable for drivers seeking rotors that maintain consistent performance under varied driving conditions, particularly for BMW vehicles listed in the fitment.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on compatible BMW models
• Improves braking performance by reducing brake fade during aggressive driving
• Helps prevent rotor corrosion and surface rust
• Reduces brake dust accumulation for cleaner braking components
• Addresses noise and vibration issues caused by uneven rotor surfaces

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (22.4 mm) before installation
• Clean mounting surface and hub to prevent rotor runout
• Torque bolts to manufacturer specifications for secure fitment
• Inspect brake pads for wear and replace if necessary to maximize rotor life
• Perform a proper bed-in procedure after installation to optimize braking performance

Quality Assurance and Warranty

Dynamite Friction rotors, including part number 644-31113, are manufactured to meet strict quality standards for durability and performance. The vented rotor design and coating contribute to extended service life and consistent braking. Warranty details should be confirmed with the point of purchase or manufacturer documentation.