Dynamite Friction 633-31053L Disc Brake Rotor - Rear Left

Overview of the DFC Brake Rotor - Drilled and Slotted - Black

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31053L) is engineered for BMW 330Ci, 330i, and 330xi models. Designed to enhance braking performance, this vented disc brake rotor features a directional, slotted, and drilled surface for improved heat dissipation and consistent stopping power.

• Compatible with BMW 330Ci, 330i, and 330xi models
• Part number: 633-31053L
• Vented disc brake rotor with drilled and slotted surface
• Directional brake surface for optimized performance
• Rust-resistant zinc black hat finish
• Nominal thickness: 21.8 mm; discard thickness: 20.4 mm
• Outside diameter: 320 mm; overall height: 60.5 mm
• 5 bolt holes with 14.7 mm diameter and 120 mm bolt circle diameter

Details on the DFC Brake Rotor - Drilled and Slotted - Black Line

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on rotors that combine drilled holes and slots to improve brake pad bite and reduce heat buildup. The black zinc coating on the rotor hat provides corrosion resistance, extending rotor life. This product line is designed to meet the demands of BMW vehicles requiring reliable vented rotors with directional braking surfaces for enhanced control and safety.

Technical Specifications and Features

This disc brake rotor is vented to allow better airflow and heat dissipation during braking, reducing the risk of brake fade. The rotor’s surface is both drilled and slotted, which helps evacuate gases, dust, and water from the braking surface, improving pad contact and braking consistency. The directional design ensures the rotor is installed correctly for optimal performance. The rotor’s nominal thickness is 21.8 mm, with a discard thickness of 20.4 mm, indicating when replacement is necessary. The zinc black finish on the hat offers rust resistance, maintaining structural integrity over time.

Applications and Problem Solving

• Improves braking performance on BMW 330Ci, 330i, and 330xi models
• Reduces brake fade during aggressive or repeated braking
• Minimizes rotor warping caused by excessive heat
• Helps maintain consistent brake pad contact and bite
• Protects against corrosion with rust-resistant coating

Installation Notes and Tips

Ensure the rotor is installed with the directional surface oriented correctly according to the vehicle’s rotation. Verify bolt hole alignment with the 5-lug, 120 mm bolt circle diameter pattern. Measure rotor thickness before installation to confirm it meets or exceeds the discard thickness of 20.4 mm. Proper torque specifications should be followed to avoid rotor damage or uneven wear.

Quality Assurance

Dynamite Friction manufactures this rotor to meet OEM specifications for BMW 330Ci, 330i, and 330xi models. The rust-resistant zinc black finish and vented design contribute to durability and performance consistency. While no specific warranty information is provided, the rotor is engineered for reliable service life under normal operating conditions.