Dynamite Friction 631-31059L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31059L) is engineered for BMW 745i, 745Li, 760i, and 760Li models. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 745i, 745Li, 760i, and 760Li
• Part Number: 631-31059L
• Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 24 mm; discard thickness: 22.4 mm
• Outside diameter: 345 mm; overall height: 67 mm
• 5 bolt holes with 16.9 mm diameter and 120 mm bolt circle diameter
• Rust resistant zinc silver hat finish with plain disc finish
• Directional brake surface for optimized performance

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

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction offers rotors designed with both drilled holes and slots on the braking surface. This combination improves water and gas evacuation during braking, reducing fade and maintaining consistent stopping power. The silver zinc coating on the rotor hat provides corrosion resistance, extending the rotor's service life. This product line is tailored for drivers seeking reliable vented rotors with enhanced heat dissipation and durability.

Technical Specifications and Features

This disc brake rotor is vented to allow better airflow and heat dissipation, which helps maintain braking efficiency under demanding conditions. The rotor's nominal thickness is 24 mm, with a discard thickness of 22.4 mm, ensuring clear service limits for replacement. The rotor measures 345 mm in outside diameter and 67 mm in overall height, fitting precisely on the specified BMW models. The rotor features a directional surface with both drilled holes and slots, designed to improve brake pad bite and reduce brake fade. The zinc silver hat finish offers rust resistance, protecting the rotor hub from corrosion. The rotor includes five bolt holes with a diameter of 16.9 mm and a bolt circle diameter of 120 mm, matching the factory specifications for the BMW 7 Series models listed.

Applications and Problem Solving

• Replaces worn or warped rotors on BMW 745i, 745Li, 760i, and 760Li
• Improves heat dissipation to reduce brake fade during heavy braking
• Enhances braking performance in wet conditions by evacuating water
• Reduces brake dust buildup with slotted and drilled surface design
• Prevents rust and corrosion on rotor hats for longer service life

Installation Notes and Tips

Ensure the rotor surface is clean and free of any protective coatings before installation. Verify the rotor thickness is above the discard thickness of 22.4 mm before mounting. Use proper torque specifications for the 5 lug bolts with 16.9 mm diameter and 120 mm bolt circle diameter. It is recommended to replace brake pads when installing new rotors to maintain optimal braking performance. Check for any signs of uneven wear or damage on the hub and wheel assembly during installation.

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31059L rotor to meet or exceed OEM specifications for fit, form, and function on BMW 745i, 745Li, 760i, and 760Li models. The rust-resistant zinc silver coating and vented design contribute to durability and consistent braking performance. Warranty details are provided by the manufacturer and should be confirmed at the time of purchase.