Dynamite Friction 633-31085L Disc Brake Rotor - Front Left

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

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

• Compatible with BMW 135i, 135is, 328i, and 330i models
• Part number: 633-31085L
• Vented disc brake rotor with drilled and slotted surface
• Rust-resistant zinc black hat finish
• Directional brake surface design for optimized performance
• Nominal thickness: 25.8 mm; discard thickness: 24.4 mm
• Outside diameter: 338 mm; overall height: 73 mm
• 5 bolt holes with 14.9 mm diameter and 120 mm bolt circle diameter

Detailed Product Features and Specifications

This DFC Brake Rotor - Drilled and Slotted - Black is designed with a vented rotor type to improve heat dissipation during braking, reducing the risk of brake fade. The rotor features a directional surface with both drilled holes and slots, which help to evacuate gases, dust, and water for consistent braking performance. The zinc black coating on the hat provides corrosion resistance, extending the rotor's service life. With a nominal thickness of 25.8 mm and a discard thickness of 24.4 mm, this rotor meets precise dimensional standards for safe operation. The rotor's 338 mm outside diameter and 73 mm height ensure proper fitment on compatible BMW models. The 5-lug bolt pattern with 14.9 mm diameter holes and a 120 mm bolt circle diameter matches factory specifications for secure installation.

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

The DFC Brake Rotor - Drilled and Slotted - Black product line by Dynamite Friction focuses on rotors that combine drilled and slotted surfaces with corrosion-resistant finishes. This line is designed to provide enhanced braking performance and durability for vehicles requiring vented rotors with directional surfaces. The black zinc finish on the hat offers additional protection against rust, making these rotors suitable for drivers seeking reliable stopping power and longevity in demanding conditions.

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 prevent brake judder caused by uneven rotor surfaces
• Reduces corrosion-related rotor damage with rust-resistant coating
• Maintains consistent braking performance in wet or dusty conditions

Installation Notes and Tips

Ensure the rotor is compatible with your specific BMW model and verify the part number 633-31085L before installation. Clean the hub surface thoroughly to prevent uneven rotor mounting. Use proper torque specifications on the 5 lug bolts to secure the rotor. It is recommended to replace brake pads simultaneously to optimize braking performance. After installation, perform a bed-in procedure to condition the new rotor surface.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC Brake Rotor - Drilled and Slotted - Black to meet OEM standards for fit and function. The rust-resistant zinc black finish and vented rotor design contribute to durability and consistent performance. Warranty details should be confirmed with the distributor or manufacturer, as coverage may vary.