Dynamite Friction 631-31027R Disc Brake Rotor - Front Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31027R) is engineered for precision braking performance. Designed specifically for select BMW models, this vented disc brake rotor offers enhanced heat dissipation and improved stopping power.

• Compatible with BMW 318i, 318is, 318ti, 320i, 323Ci, 323i, 323is, 325i, 325is, 328i, 328is, Z3, and Z4 models
• Directional drilled and slotted surface for optimized brake pad contact and heat management
• Vented rotor design to reduce brake fade during extended use
• Nominal thickness of 22 mm with a discard thickness of 20.4 mm for reliable wear limits
• Zinc silver hat finish with rust-resistant coating for corrosion protection
• 5 bolt holes with 15 mm diameter and 120 mm bolt circle diameter for secure fitment
• Overall diameter of 286 mm and height of 51.7 mm for precise OEM replacement

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

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and slots in a directional pattern. This design improves water and gas evacuation from the rotor surface, enhancing braking consistency and reducing the risk of brake fade. The silver zinc coating on the rotor hat provides additional corrosion resistance, extending the rotor's service life in various driving conditions.

Technical Specifications and Features

This disc brake rotor features a vented design that promotes airflow between the rotor surfaces, helping to dissipate heat generated during braking. The rotor's surface is both drilled and slotted in a directional pattern, which aids in removing brake dust, gases, and moisture for improved pad bite and consistent braking performance. The rotor's nominal thickness is 22 mm, with a discard thickness of 20.4 mm, ensuring clear wear limits for safe operation. The rotor includes five bolt holes with a diameter of 15 mm and a bolt circle diameter of 120 mm, matching the OEM specifications for the compatible BMW models.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 3 Series and Z models
• Improves braking performance under wet or high-temperature conditions
• Reduces brake fade during aggressive or extended driving
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Protects against rust and corrosion for longer rotor life

Installation Notes and Tips

Ensure the rotor surface is clean and free of any contaminants before installation. Verify that the rotor thickness meets or exceeds the discard thickness of 20.4 mm to maintain safe braking performance. Use proper torque specifications for the 5 lug bolts with 15 mm diameter and 120 mm bolt circle diameter. Directional rotors must be installed with the correct rotation direction to maintain optimal performance and longevity.

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-31027R rotor to meet or exceed OEM standards for fit, form, and function. The rust-resistant zinc silver coating on the rotor hat enhances durability against corrosion. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure reliable braking performance for BMW 318i, 320i, 325i, 328i, Z3, and Z4 vehicles.