Dynamite Friction 631-31075R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31075R) is engineered for BMW models including the 525xi, 528i xDrive, 528xi, 530xi, and 535i xDrive. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Nominal thickness: 19.9 mm
• Discard thickness: 18.4 mm
• Outside diameter: 320 mm
• Overall height: 86.1 mm
• Bolt hole quantity: 5 with 14.8 mm diameter
• Bolt circle diameter: 120 mm
• Center hole diameter: 75 mm
• Rust resistant zinc silver hat finish
• Directional drilled and slotted surface for improved braking
• Vented rotor design for enhanced heat dissipation

Details on the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and precision slots to improve water and gas evacuation during braking. This design helps maintain consistent brake pad contact and reduces brake fade under demanding conditions. The zinc silver hat finish provides corrosion resistance, extending rotor life and maintaining appearance.

Product Features and Specifications

This disc brake rotor is vented, allowing air to flow between the rotor surfaces to dissipate heat more effectively during braking. The directional surface pattern, featuring both drilled holes and slots, is engineered to optimize braking performance for BMW vehicles such as the 535xi and 528i xDrive. The rotor’s nominal thickness of 19.9 mm and discard thickness of 18.4 mm ensure it meets OEM standards for durability and safety. The rotor’s bolt pattern includes five 14.8 mm diameter holes on a 120 mm bolt circle, compatible with the specified BMW models.

Common Applications and Problem Solving

• Reduces brake fade during aggressive or repeated braking
• Improves heat dissipation to prevent rotor warping
• Enhances wet weather braking performance by channeling water away
• Maintains consistent brake pad contact for smoother stops
• Resists rust and corrosion with zinc silver coating on the hat

Installation Notes and Tips

Ensure the rotor surface is clean and free of any contaminants before installation. Verify the bolt hole pattern and diameter match your BMW model’s specifications. It is recommended to replace brake pads when installing new rotors to maintain optimal braking performance. Torque lug nuts to manufacturer specifications and check rotor runout after installation.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor to meet or exceed OEM standards for fit, form, and function. The rust resistant coating on the rotor hat helps extend service life. Please refer to Dynamite Friction’s warranty policy for specific coverage details related to the 631-31075R brake rotor.