Dynamite Friction 633-31048L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31048L) is engineered for BMW models including the 330Ci, 330i, 330xi, and Z4. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 330Ci, 330i, 330xi, and Z4 models
• Part Number: 633-31048L
• Vented disc brake rotor with directional drilled and slotted surface
• 325 mm outside diameter and 52.7 mm overall height
• Zinc black hat finish with rust-resistant coating
• 5 bolt holes with 14.6 mm diameter and 120 mm bolt circle diameter
• Nominal thickness of 25 mm and discard thickness of 23.4 mm

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

The DFC Brake Rotor - Drilled and Slotted - Black line from Dynamite Friction offers rotors designed to improve braking efficiency through enhanced heat dissipation and debris removal. The drilled and slotted surface pattern helps maintain consistent brake pad contact and reduces the risk of brake fade under demanding conditions. The zinc black hat finish provides corrosion resistance, extending rotor life while maintaining a clean appearance.

Technical Specifications and Features

This disc brake rotor is vented to allow better airflow and cooling during braking, which is critical for maintaining performance and preventing warping. The rotor measures 325 mm in outside diameter with an overall height of 52.7 mm. It features a nominal thickness of 25 mm and a discard thickness of 23.4 mm, ensuring safe replacement intervals. The rotor includes five bolt holes with a diameter of 14.6 mm and a bolt circle diameter of 120 mm, matching the stud/lug hole pattern for precise fitment on compatible BMW models.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 330Ci, 330i, 330xi, and Z4
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps maintain consistent braking performance under wet or dusty conditions
• Addresses rotor corrosion issues with rust-resistant zinc black hat finish
• Enhances brake pad bite and reduces glazing with slotted and drilled surface

Installation Notes and Tips

Ensure the rotor is installed on compatible BMW models listed to maintain proper fitment. Verify the bolt hole pattern and diameter match your vehicle’s specifications. It is recommended to replace brake pads when installing new rotors to optimize braking performance. Clean the rotor surface of any protective coatings before installation to prevent brake noise or reduced friction.

Quality Assurance and Warranty

Dynamite Friction rotors are manufactured to meet or exceed OEM standards for durability and performance. The rust-resistant coating and zinc black finish contribute to long-term reliability. Please refer to Dynamite Friction’s warranty policy for specific coverage details related to the 633-31048L rotor.