Dynamite Friction 633-31085R Disc Brake Rotor - Front Right

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

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31085R) is engineered for BMW models including the 135i, 135is, 328i, and 330i. This vented disc brake rotor combines drilled and slotted surface features with a rust-resistant zinc black hat finish to support reliable braking performance under various driving conditions.

• Compatible with BMW 135i, 135is, 328i, and 330i models
• Part number 633-31085R for precise identification
• Vented rotor design for improved heat dissipation
• Directional drilled and slotted surface for enhanced brake pad bite and debris removal
• Zinc black hat finish with rust-resistant coating for corrosion protection
• Nominal thickness of 25.8 mm and discard thickness of 24.4 mm
• 5 bolt holes with 14.9 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 338 mm and height of 73 mm

Detailed Product Features and Specifications

The DFC Brake Rotor - Drilled and Slotted - Black is designed with a vented rotor type that helps reduce brake fade by allowing better airflow and heat dissipation during braking. The rotor surface features a directional pattern with both drilled holes and slots, which aid in removing brake dust, gases, and water from the contact surface, improving braking consistency. The rotor’s nominal thickness is 25.8 mm, with a discard thickness of 24.4 mm, ensuring safe replacement intervals. The zinc black hat finish provides a rust-resistant coating to protect against corrosion, extending the rotor’s service life. The rotor includes five bolt holes with a diameter of 14.9 mm and a bolt circle diameter of 120 mm, matching the stud/lug hole pattern of compatible BMW models. The overall diameter measures 338 mm with a height of 73 mm, fitting precisely on the specified vehicles.

About the DFC Brake Rotor - Drilled and Slotted - Black Product Line

The DFC Brake Rotor - Drilled and Slotted - Black line from Dynamite Friction focuses on rotors that combine drilled and slotted surfaces with corrosion-resistant finishes. This product line is designed to provide enhanced braking performance and durability for vehicles requiring vented rotors with directional surface patterns. The black zinc hat finish is a distinguishing feature that offers additional protection against rust, making these rotors suitable for drivers who demand consistent braking in various environments.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 135i, 135is, 328i, and 330i
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps eliminate brake pad glazing and uneven wear caused by debris
• Prevents corrosion-related rotor damage with rust-resistant coating
• Restores braking performance affected by rotor surface damage or scoring

Installation Notes and Tips

When installing the 633-31085R rotor, ensure the rotor surface is clean and free of any protective oils before mounting. Verify the bolt hole alignment matches the vehicle’s hub with the 5-bolt, 120 mm bolt circle pattern. Use proper torque specifications for the lug nuts to avoid rotor warping. It is recommended to replace brake pads simultaneously to ensure optimal contact and performance. Check rotor thickness regularly and replace when reaching the discard thickness of 24.4 mm.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC Brake Rotor - Drilled and Slotted - Black to meet or exceed OEM specifications for fitment and performance on BMW 135i, 135is, 328i, and 330i models. The rust-resistant coating and vented design contribute to the rotor’s durability and consistent braking capability. Warranty details should be confirmed with the distributor or manufacturer, as coverage may vary.