Dynamite Friction 640-31113 Disc Brake Rotor - Rear

Overview of the DFC Brake Rotor - Dimpled and Slotted

The Dynamite Friction DFC Brake Rotor - Dimpled and Slotted (part number 640-31113) is engineered for precision braking performance on select BMW models. Designed with vented construction and enhanced surface features, this rotor supports consistent heat dissipation and improved brake pad contact.

• Vented disc brake rotor with dimpled and slotted surface
• Nominal thickness of 24 mm and discard thickness of 22.4 mm
• Outside diameter measures 344 mm for optimal fit
• Five bolt holes with 16.6 mm diameter and 75 mm inside diameter
• Height of 66.3 mm ensures proper alignment and clearance

Detailed Product Specifications

This Dynamite Friction rotor features a vented design that promotes effective heat dissipation during braking, reducing the risk of brake fade. The dimpled and slotted surface pattern enhances pad bite and helps channel away dust and gases generated under heavy braking. With a nominal thickness of 24 mm and a discard thickness of 22.4 mm, this rotor maintains structural integrity and performance throughout its service life. The rotor’s 344 mm outside diameter and 66.3 mm height are engineered to fit precisely on compatible BMW models, ensuring proper installation and function.

DFC Brake Rotor - Dimpled and Slotted Product Line

The DFC Brake Rotor - Dimpled and Slotted line by Dynamite Friction focuses on rotors that combine vented construction with surface dimpling and slotting. This design improves braking efficiency by increasing friction surface area and aiding in heat and debris management. The 640-31113 rotor is part of this line, tailored to meet the demands of performance-oriented BMW vehicles requiring reliable stopping power and rotor durability.

Compatible BMW Models and Applications

• Compatible with BMW 118i, 120i, 230i, 230i xDrive
• Fits BMW 328i, 428i, M135i, M140i
• Suitable for BMW M235i, M235i xDrive, M240i, M240i xDrive
• Designed for vehicles requiring a 5-bolt rotor with 16.6 mm bolt hole diameter

Common Issues Addressed by This Rotor

• Brake fade caused by overheating during aggressive driving
• Uneven brake pad wear due to rotor surface irregularities
• Reduced braking efficiency from dust and gas buildup
• Vibration or pulsation from warped or worn rotors
• Compatibility issues with OEM brake components on specified BMW models

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (22.4 mm) before installation
• Clean rotor surface to remove any protective coatings or debris
• Torque wheel bolts to manufacturer specifications for BMW models
• Inspect brake pads and calipers for wear or damage during rotor replacement
• Perform a bed-in procedure after installation to optimize rotor and pad performance

Quality Assurance and Warranty

Dynamite Friction manufactures the 640-31113 rotor to meet strict quality standards for durability and performance. The vented rotor design and precise machining ensure consistent braking response. Warranty details should be confirmed with the point of purchase or manufacturer documentation.