Dynamite Friction 631-31045L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-31045L) is engineered for precise braking performance on BMW Z3 models. This solid disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with BMW Z3 vehicles
• Solid rotor design with drilled and slotted surface
• Nominal thickness of 10 mm and discard thickness of 8.4 mm
• Zinc silver hat finish with rust-resistant coating
• Directional brake surface for optimized performance
• 5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 272 mm and height of 83.2 mm

Detailed Product Description

This DFC Brake Rotor - Drilled and Slotted - Silver from Dynamite Friction is designed specifically for the BMW Z3, ensuring proper fitment and reliable braking. The rotor is solid rather than vented, providing a robust structure with a nominal thickness of 10 mm and a discard thickness of 8.4 mm, which indicates when replacement is necessary. The rotor surface is both drilled and slotted, which helps to reduce brake fade by improving heat dissipation and allowing gases and debris to escape during braking.

The rotor features a plain disc finish combined with a zinc silver hat finish that includes a rust-resistant coating to protect against corrosion. The directional brake surface is engineered to optimize braking efficiency and maintain consistent contact with brake pads. With 5 bolt holes measuring 14.6 mm in diameter and a bolt circle diameter of 120 mm, this rotor matches the BMW Z3’s specifications precisely.

DFC Brake Rotor - Drilled and Slotted - Silver Product Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on delivering rotors with enhanced heat management and durability. The drilled and slotted design improves braking performance under demanding conditions by facilitating better cooling and debris removal. This product line is suitable for drivers seeking reliable stopping power with corrosion resistance, especially for vehicles like the BMW Z3 that require precise rotor specifications.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW Z3 models
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps prevent rust and corrosion with zinc silver coating
• Maintains consistent braking performance with directional surface design
• Addresses noise and vibration issues caused by uneven rotor surfaces

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 8.4 mm before installation. Clean the rotor surface to remove any protective coatings or debris prior to mounting. Verify bolt hole alignment with the 5-lug pattern and 120 mm bolt circle diameter on the BMW Z3. Proper torque specifications should be followed to avoid rotor warping. Directional rotors must be installed with the correct rotation direction for optimal performance.

Quality Assurance

Dynamite Friction manufactures this rotor to meet OEM specifications for the BMW Z3, ensuring reliable fit and function. The rust-resistant coating extends rotor life by protecting against corrosion. While no specific warranty information is provided, the rotor’s design and materials support durability and consistent braking performance.