Dynamite Friction 604-31085 Disc Brake Rotor - Front

Overview of Dynamite Friction DFC GEOSPEC Coated Rotor 604-31085

The Dynamite Friction DFC GEOSPEC Coated Rotor 604-31085 is engineered for BMW models including the 135i, 135is, 328i, and 330i. This vented disc brake rotor offers precise dimensions and a durable coating designed to enhance braking performance and rotor longevity.

• Compatible with BMW 135i, 135is, 328i, and 330i models
• Part number: 604-31085
• Vented disc brake rotor design for improved heat dissipation
• Nominal thickness: 25.8 mm; discard thickness: 24.4 mm
• Outside diameter: 338 mm; inside diameter: 79 mm
• Five bolt holes with 14.9 mm diameter each
• Rotor height: 73 mm

DFC GEOSPEC Coated Rotor Product Line Details

The DFC GEOSPEC Coated Rotor line by Dynamite Friction focuses on rotors with a protective coating that helps resist corrosion and wear. This coating extends the rotor's service life while maintaining consistent braking performance. The vented design of the 604-31085 rotor improves heat dissipation, which is critical for maintaining braking efficiency under demanding conditions.

Technical Specifications and Features

This disc brake rotor features a nominal thickness of 25.8 mm and a discard thickness of 24.4 mm, ensuring it meets safety and performance standards for BMW vehicles. The rotor’s outside diameter measures 338 mm, with an inside diameter of 79 mm, and it includes five bolt holes each measuring 14.9 mm in diameter. The vented rotor design enhances airflow to reduce heat buildup during braking, which helps prevent brake fade and extends component life.

Applications and Problem Solving

• Replacement rotor for worn or warped rotors on BMW 135i, 135is, 328i, and 330i
• Addresses brake noise and vibration issues caused by uneven rotor surfaces
• Improves heat dissipation to reduce brake fade during aggressive driving or heavy braking
• Helps prevent rust and corrosion with its protective coating
• Restores braking performance and pedal feel for safer driving

Installation Notes and Tips

When installing the Dynamite Friction 604-31085 rotor, ensure the rotor thickness is above the discard thickness of 24.4 mm for safe operation. Clean the rotor surface before installation to remove any protective oils or residues. Use proper torque specifications for the five 14.9 mm bolt holes to secure the rotor firmly. It is recommended to inspect brake pads and replace them if worn to maintain optimal braking performance.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC GEOSPEC Coated Rotor 604-31085 to meet OEM standards for fitment and durability. The rotor undergoes quality control checks to ensure dimensional accuracy and coating integrity. Please refer to Dynamite Friction’s warranty policy for specific coverage details related to defects or premature wear.