Dynamite Friction 604-31117 Disc Brake Rotor - Rear

Overview of Dynamite Friction DFC GEOSPEC Coated Rotor 604-31117

The Dynamite Friction DFC GEOSPEC Coated Rotor 604-31117 is engineered for precision braking performance on select BMW models. Designed as a vented disc brake rotor, it offers reliable heat dissipation and consistent stopping power for vehicles such as the BMW 320i xDrive and 330i GT xDrive.

• Nominal thickness: 20 mm
• Discard thickness: 18.4 mm
• Outside diameter: 300 mm
• Inside diameter: 75.05 mm
• Bolt hole diameter: 16.8 mm with 5 bolt holes
• Height: 66.3 mm
• Vented rotor design for improved cooling

Detailed Product Features and Specifications

This disc brake rotor, part number 604-31117, is specifically designed to meet the braking demands of various BMW models including the 325xi, 328i xDrive, 428i Gran Coupe, and X1. The vented rotor construction enhances airflow to reduce heat buildup during braking, which helps maintain consistent brake performance and reduces the risk of rotor warping. With a nominal thickness of 20 mm and a discard thickness of 18.4 mm, this rotor provides a balance between durability and performance. The 300 mm outside diameter and 75.05 mm inside diameter ensure proper fitment and compatibility with the specified BMW vehicles. The rotor features five bolt holes with a diameter of 16.8 mm, matching the factory specifications for secure installation.

About the DFC GEOSPEC Coated Rotor Product Line

The DFC GEOSPEC Coated Rotor line by Dynamite Friction focuses on rotors with specialized coatings designed to resist corrosion and extend rotor life. This coating helps maintain rotor surface integrity under various driving conditions, which is particularly beneficial for BMW models exposed to diverse climates. The 604-31117 rotor benefits from this coating, providing a reliable braking surface that supports consistent pad contact and braking efficiency.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 320i xDrive and 330i xDrive models
• Improves heat dissipation to reduce brake fade during extended use
• Addresses rotor corrosion issues common in humid or salty environments
• Restores proper rotor thickness for optimal braking performance
• Compatible with multiple BMW models requiring a 5-bolt vented rotor

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (18.4 mm) before installation
• Clean mounting surface to prevent uneven rotor seating
• Torque bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Check for proper rotor alignment and runout after installation

Quality Assurance and Warranty

Dynamite Friction manufactures the 604-31117 rotor to meet OEM standards for fit and function on BMW vehicles. The DFC GEOSPEC Coated Rotor line undergoes rigorous quality control to ensure durability and consistent braking performance. Warranty details are provided by Dynamite Friction and typically cover manufacturing defects; consult product documentation for specific terms.