Dynamite Friction 604-31046 Disc Brake Rotor - Front

Overview of Dynamite Friction DFC GEOSPEC Coated Rotor 604-31046

The Dynamite Friction DFC GEOSPEC Coated Rotor 604-31046 is engineered for reliable braking performance on select BMW models. Designed as a vented disc brake rotor, it offers consistent heat dissipation and durability for vehicles such as the BMW 323i, 325Ci, 325i, 325xi, 328Ci, 328i, Z3, and Z4.

• Nominal thickness: 22 mm
• Discard thickness: 20.4 mm
• Outside diameter: 300 mm
• Inside diameter: 79 mm
• Bolt hole diameter: 14.6 mm
• Bolt hole quantity: 5
• Height: 51.5 mm
• Vented rotor design for improved cooling

DFC GEOSPEC Coated Rotor Product Line Details

The DFC GEOSPEC Coated Rotor line by Dynamite Friction focuses on rotors with a protective coating to resist corrosion and extend service life. This coating helps maintain rotor integrity under various driving conditions, making it suitable for BMW vehicles requiring precise braking components. The 604-31046 part number represents a vented rotor optimized for heat management and durability within this product line.

Technical Description and Specifications

This disc brake rotor features a nominal thickness of 22 mm and a discard thickness of 20.4 mm, ensuring a clear service limit for safe operation. The rotor’s 300 mm outside diameter and 79 mm inside diameter are designed to match the brake system specifications of compatible BMW models. With five bolt holes each measuring 14.6 mm in diameter, the rotor mounts securely to the hub. The vented design enhances airflow, reducing heat buildup during braking and helping to prevent brake fade. The rotor height of 51.5 mm aligns with factory requirements for proper caliper clearance and brake pad contact.

Compatible BMW Models and Applications

• BMW 323i
• BMW 325Ci
• BMW 325i
• BMW 325xi
• BMW 328Ci
• BMW 328i
• BMW Z3
• BMW Z4

This rotor is specifically designed for these BMW models, ensuring proper fitment and braking performance when replacing worn or damaged rotors.

Common Issues Addressed by This Rotor

• Brake rotor warping due to heat stress
• Corrosion and rust buildup on rotor surfaces
• Reduced braking efficiency from worn rotors
• Brake noise caused by uneven rotor wear
• Vibration or pulsation during braking

Installation Notes and Tips

When installing the Dynamite Friction 604-31046 rotor, ensure the rotor surface is clean and free of contaminants. Verify that the bolt hole pattern and diameter match the vehicle hub. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Proper torque specifications should be followed for mounting bolts to avoid rotor distortion. After installation, perform a brake bed-in procedure to ensure even pad and rotor contact.

Quality Assurance and Warranty

Dynamite Friction rotors, including the DFC GEOSPEC Coated Rotor 604-31046, are manufactured to meet industry standards for durability and performance. The protective coating helps resist corrosion, extending rotor life. Warranty details should be confirmed with the product documentation or supplier, as coverage may vary.