Dynamite Friction 633-31042R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31042R) is engineered for BMW 320i, 323Ci, 323i, and 328i models. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 320i, 323Ci, 323i, and 328i
• Part number: 633-31042R
• Vented disc brake rotor with drilled and slotted surface
• Directional brake surface for optimized braking
• Rust resistant zinc black hat finish
• Nominal thickness: 19 mm; discard thickness: 17.4 mm
• Outside diameter: 276 mm; overall height: 60 mm
• 5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Black

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction offers rotors designed with both drilled holes and slots on the braking surface. This combination improves heat dissipation and helps remove brake dust and gases, which can enhance braking consistency. The zinc black finish on the rotor hat provides corrosion resistance, extending the rotor's service life. This product line is tailored for drivers seeking reliable braking components compatible with specific BMW models.

Technical Specifications and Features

This disc brake rotor is vented to allow better airflow and heat management during braking. The rotor’s nominal thickness is 19 mm, with a discard thickness of 17.4 mm, ensuring clear service limits for safety. The rotor surface is directional, meaning it is designed to rotate in a specific direction to maximize performance. The drilled and slotted surface type aids in reducing brake fade and maintaining clean pad contact. The rotor hat is coated with a rust-resistant zinc black finish to protect against corrosion. It features 5 bolt holes with a diameter of 14.6 mm and a bolt circle diameter of 120 mm, matching the stud/lug hole pattern of the compatible BMW models.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on BMW 320i, 323Ci, 323i, and 328i
• Improves heat dissipation to reduce brake fade during aggressive driving or heavy braking
• Helps maintain consistent braking performance by reducing brake dust buildup
• Addresses rotor corrosion issues with rust-resistant coating
• Restores proper braking surface for improved stopping power and safety

Installation Notes and Tips

Ensure the rotor is installed with the directional surface oriented according to the vehicle’s rotation direction. Verify that the bolt hole pattern (5 holes, 14.6 mm diameter, 120 mm bolt circle) matches the vehicle hub. Measure rotor thickness before installation to confirm it meets or exceeds the discard thickness of 17.4 mm. Clean the rotor surface of any protective coatings or oils before mounting to ensure proper pad contact. Use proper torque specifications for lug nuts to avoid rotor warping.

Quality Assurance

Dynamite Friction manufactures this rotor to meet OEM specifications for fitment and performance on BMW 320i, 323Ci, 323i, and 328i models. The rust-resistant zinc black finish on the rotor hat enhances durability. While no specific warranty information is provided, the rotor’s design and materials support reliable braking performance when installed and maintained properly.