Dynamite Friction 631-31098R Disc Brake Rotor - Rear Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31098R) is engineered for precise braking performance on BMW Z4 models. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance heat dissipation and maintain consistent stopping power under demanding conditions.

• Compatible with BMW Z4 vehicles
• Directional slotted and drilled surface for improved brake pad bite and cooling
• Vented rotor design to reduce heat buildup
• Nominal thickness of 20 mm with a discard thickness of 18.4 mm
• Rust-resistant zinc silver hat finish for corrosion protection
• 5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 300 mm and height of 54.1 mm

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 slots to optimize brake pad contact and heat dissipation. This product line is designed to provide consistent braking performance while minimizing rotor warping and brake fade. The silver zinc coating on the rotor hat offers additional rust resistance, extending the rotor's service life in various driving environments.

Technical Specifications and Features

This disc brake rotor is vented to allow air to flow between the rotor surfaces, which helps maintain lower operating temperatures during braking. The directional surface pattern, featuring both drilled holes and slots, aids in channeling away gases, dust, and water from the brake pad interface. The rotor measures 300 mm in outside diameter with a 75 mm center hole diameter, ensuring proper fitment on BMW Z4 models. The 5-lug bolt pattern with 14.6 mm diameter holes and a 120 mm bolt circle diameter matches factory specifications for secure mounting.

Applications and Problem Solving

• Replaces worn or warped rotors on BMW Z4 vehicles
• Improves brake cooling to reduce fade during spirited driving or heavy braking
• Enhances braking response with slotted and drilled surface design
• Prevents rust and corrosion on rotor hats for longer durability
• Maintains proper rotor thickness for safe braking performance

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 18.4 mm before installation. Clean the rotor surface to remove any protective coatings or contaminants prior to mounting. Verify the 5-lug bolt pattern and 120 mm bolt circle diameter match the vehicle hub. Proper torque specifications should be followed to avoid rotor warping. Directional rotors must be installed with the correct rotation direction as indicated on the rotor surface.

Quality Assurance

Dynamite Friction manufactures this rotor to meet OEM standards for fit and function on BMW Z4 models. The rust-resistant zinc silver finish on the rotor hat helps protect against corrosion. While no specific warranty information is provided, the rotor is designed for reliable performance and durability under normal operating conditions.