Dynamite Friction 631-31044R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31044R) is engineered for BMW 525i, 528i, 530i, and 540i models. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 525i, 528i, 530i, and 540i
• Part number 631-31044R
• Vented disc brake rotor with drilled and slotted surface
• Directional brake surface for optimized performance
• Rust resistant zinc silver hat finish
• Nominal thickness: 20 mm; discard thickness: 18.4 mm
• Overall diameter: 298 mm; height: 61 mm
• 5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter

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

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction is designed to provide reliable braking with enhanced heat management. The drilled and slotted surface helps reduce brake fade by allowing gases and debris to escape, while the vented rotor design improves airflow to maintain optimal operating temperatures. The zinc silver coating on the rotor hat offers corrosion resistance, extending the rotor's service life.

Technical Specifications and Features

This disc brake rotor is vented and directional, with a surface type combining both drilled holes and slots to improve water and dust evacuation. The rotor has a nominal thickness of 20 mm and a discard thickness of 18.4 mm, ensuring clear service limits for safe replacement. The rotor’s overall diameter measures 298 mm with a height of 61 mm, fitting precisely on BMW 5 Series models listed. The rotor includes five bolt holes with a diameter of 14.6 mm arranged on a 120 mm bolt circle diameter, matching the factory specifications for secure mounting.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on BMW 525i, 528i, 530i, and 540i
• Improves heat dissipation to reduce brake fade during aggressive driving or heavy braking
• Helps maintain consistent braking performance in wet or dusty conditions
• Addresses rotor corrosion issues with rust resistant zinc silver coating
• Restores braking efficiency and pedal feel for safer vehicle operation

Installation Notes and Tips

Ensure the rotor surface and hub are clean and free of debris before installation. Verify the rotor thickness is above the discard thickness of 18.4 mm to maintain safety standards. Use proper torque specifications for the 5 lug bolts with 14.6 mm diameter on the 120 mm bolt circle diameter. The directional surface requires correct orientation to the wheel rotation for optimal performance.

Quality Assurance

Dynamite Friction manufactures this rotor to meet OEM specifications for fit and function on BMW 5 Series models. The rust resistant zinc silver coating helps extend rotor life by preventing corrosion. While no specific warranty information is provided, the rotor is designed for durability and consistent braking performance under normal operating conditions.