Dynamite Friction 604-31047 Disc Brake Rotor - Rear

Overview of Dynamite Friction DFC GEOSPEC Coated Rotor 604-31047

The Dynamite Friction DFC GEOSPEC Coated Rotor 604-31047 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 like the BMW 323i, 325Ci, 325i, 328Ci, and 328i.

• Compatible with BMW 323i, 325Ci, 325i, 328Ci, and 328i models
• Part number 604-31047 for accurate identification
• Vented rotor design for improved cooling
• Nominal thickness of 19 mm and discard thickness of 17.4 mm
• Outside diameter of 294 mm and inside diameter of 75 mm
• Five bolt holes with 14.6 mm diameter each
• Height of 59.7 mm for proper fitment

Detailed Specifications and Features

This disc brake rotor features a vented design that enhances airflow to reduce heat buildup during braking, which is critical for maintaining brake performance and rotor longevity. The rotor’s nominal thickness is 19 mm, with a discard thickness of 17.4 mm, indicating when replacement is necessary to ensure safety and effectiveness. The rotor measures 294 mm in outside diameter and 75 mm inside diameter, fitting precisely on the specified BMW models. It includes five bolt holes, each with a diameter of 14.6 mm, ensuring secure mounting. The rotor height is 59.7 mm, matching OEM specifications for proper clearance and operation.

About the DFC GEOSPEC Coated Rotor Line

The DFC GEOSPEC Coated Rotor line by Dynamite Friction is designed to provide enhanced corrosion resistance and durability through a specialized coating process. This coating helps protect the rotor surface from rust and environmental wear, extending the service life of the rotor while maintaining consistent braking performance. The 604-31047 rotor benefits from this coating, making it suitable for drivers seeking reliable braking components for their BMW 3 Series vehicles.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 323i, 325Ci, 325i, 328Ci, and 328i
• Improves heat dissipation to reduce brake fade during extended use
• Addresses rotor corrosion issues with coated surface protection
• Restores proper rotor thickness for safe braking performance
• Ensures secure fitment with correct bolt hole pattern and dimensions

Installation Notes and Tips

When installing the Dynamite Friction 604-31047 rotor, ensure the rotor discard thickness of 17.4 mm is not exceeded to maintain braking safety. Clean the hub surface before mounting to prevent uneven rotor seating. Use proper torque specifications on the five 14.6 mm bolt holes to secure the rotor firmly. It is recommended to replace brake pads simultaneously to optimize braking efficiency and rotor lifespan.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC GEOSPEC Coated Rotor 604-31047 to meet or exceed OEM standards for fit, form, and function. The coating process adds an extra layer of protection against corrosion, contributing to the rotor’s durability. Warranty details should be confirmed with the supplier or manufacturer, as coverage may vary based on application and usage conditions.