Dynamite Friction 633-31104L Disc Brake Rotor - Rear Left

Overview of DFC Brake Rotor - Drilled and Slotted - Black

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31104L) is engineered for BMW 5 Series models including the 528i, 528i xDrive, 535d, 535d xDrive, 535i, 535i xDrive, and ActiveHybrid 5. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 528i, 528i xDrive, 535d, 535d xDrive, 535i, 535i xDrive, and ActiveHybrid 5
• Part Number: 633-31104L
• Disc Finish: Plain with zinc black hat finish
• Surface Type: Directional slotted and drilled
• Vented rotor design for improved cooling
• Rust resistant coating for extended durability
• Dimensions: 330mm outside diameter, 20mm nominal thickness, 18.4mm discard thickness
• 5 bolt holes with 16.6mm diameter and 120mm bolt circle diameter

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

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction offers rotors with enhanced surface features such as drilled holes and slots to improve brake pad bite and heat dissipation. The zinc black hat finish provides corrosion resistance while maintaining a clean appearance. This product line is designed to meet the demands of BMW vehicles requiring reliable vented rotors with directional braking surfaces.

Technical Specifications and Features

This disc brake rotor is vented to allow air flow between the rotor surfaces, reducing heat buildup during braking. The directional slotted and drilled surface helps evacuate gases and debris, improving braking consistency. The rotor measures 330mm in outside diameter with a nominal thickness of 20mm and a discard thickness of 18.4mm, ensuring proper wear limits are maintained. The zinc black finish on the hat section adds rust resistance, extending rotor life. It features 5 bolt holes with a diameter of 16.6mm and a bolt circle diameter of 120mm, matching the BMW 5 Series specifications.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on BMW 528i and 535i models
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Rust resistant coating prevents corrosion-related rotor damage
• Directional slotted and drilled design aids in maintaining consistent braking performance

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 pattern and 120mm bolt circle diameter. Check rotor thickness before installation to confirm it meets or exceeds the discard thickness of 18.4mm. Clean the rotor surface to remove any protective coatings or residues before mounting brake pads.

Quality Assurance

Dynamite Friction rotors are manufactured to meet OEM specifications for fit and function. The rust resistant zinc black finish and vented design contribute to long service life. While no specific warranty information is provided, this rotor is designed for reliable performance on BMW 5 Series vehicles including the 528i, 535i, and ActiveHybrid 5 models.