Dynamite Friction 633-31098L Disc Brake Rotor - Rear Left

Overview of the DFC Brake Rotor for BMW Z4

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31098L) is engineered specifically for BMW Z4 models. This vented disc brake rotor combines drilled and slotted surface features with a durable zinc black hat finish to enhance braking performance and corrosion resistance.

• Compatible with BMW Z4 vehicles
• Part Number: 633-31098L
• Drilled and slotted directional surface for improved heat dissipation
• Vented rotor design for enhanced cooling
• Zinc black hat finish with rust-resistant coating
• Nominal thickness of 20 mm and discard thickness of 18.4 mm
• 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 - Black Line

The DFC Brake Rotor - Drilled and Slotted - Black product line by Dynamite Friction focuses on rotors that feature both drilled holes and slots on the braking surface. This design helps to reduce brake fade by improving heat dissipation and gas evacuation during braking. The black zinc coating on the rotor hat provides additional protection against rust and corrosion, making it suitable for long-term use on BMW Z4 vehicles. This rotor line is engineered to meet the specific fitment and performance requirements of select models, including the BMW Z4.

Technical Specifications and Features

This disc brake rotor is vented, allowing air to flow between the rotor surfaces to maintain optimal operating temperatures. The directional drilled and slotted surface improves braking consistency by channeling away dust, water, and gases. The rotor measures 300 mm in outside diameter with a 54.1 mm overall height. It features a nominal thickness of 20 mm and a discard thickness of 18.4 mm, ensuring safe replacement intervals. The rotor includes five bolt holes with a diameter of 14.6 mm arranged on a 120 mm bolt circle diameter, matching the BMW Z4's hub specifications.

Applications and Problem Solving

• Replacement rotor for worn or warped BMW Z4 brake rotors
• Improves heat dissipation to reduce brake fade during spirited driving
• Helps maintain consistent braking performance in wet conditions
• Prevents rust and corrosion on rotor hats with zinc black coating
• Addresses noise and vibration issues caused by uneven rotor surfaces

Installation Notes and Tips

Ensure the rotor is compatible with your specific BMW Z4 model year before installation. Clean the hub surface thoroughly to prevent rotor runout. Use proper torque specifications for the 5 lug bolts (14.6 mm diameter) on the 120 mm bolt circle diameter. It is recommended to replace brake pads simultaneously to optimize braking performance. Check rotor thickness regularly and replace when thickness reaches the discard limit of 18.4 mm.

Quality Assurance

Dynamite Friction manufactures the 633-31098L rotor to meet OEM fitment and performance standards for the BMW Z4. The rust-resistant zinc black coating and vented design contribute to durability and consistent braking. While no specific warranty information is provided, this rotor is designed for reliable service life when installed and maintained according to manufacturer guidelines.