Dynamite Friction 633-31088R Disc Brake Rotor - Rear Right

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

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31088R) is engineered for BMW 125i and 128i 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 125i and 128i models
• Directional, slotted and drilled surface for enhanced braking
• Vented rotor design for superior heat management
• Zinc black hat finish with rust-resistant coating
• Overall diameter of 300 mm and nominal thickness of 20 mm
• 5 bolt holes with 14.5 mm diameter and 120 mm bolt circle diameter

Detailed Product Features and Specifications

This DFC Brake Rotor - Drilled and Slotted - Black is a vented disc brake rotor with an outside diameter of 300 mm and an overall height of 76.2 mm. The rotor’s nominal thickness is 20 mm, with a discard thickness of 18.4 mm, ensuring reliable service life and clear replacement guidelines. The rotor surface is both drilled and slotted, which helps to reduce brake fade by improving heat dissipation and removing brake dust and gases during operation. The directional brake surface is designed to optimize performance when installed in the correct orientation.

The rotor hat features a zinc black finish that provides corrosion resistance, complemented by an overall rust-resistant coating to extend the rotor’s durability. It includes five bolt holes with a diameter of 14.5 mm and a bolt circle diameter of 120 mm, matching the stud/lug hole pattern for secure fitment on BMW 125i and 128i vehicles. The center hole diameter measures 75 mm, ensuring proper alignment during installation.

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 consistent braking performance under demanding conditions, with vented rotors that help maintain optimal operating temperatures. The black zinc hat finish and rust-resistant coating contribute to longer rotor life, making this line suitable for drivers seeking reliable replacement parts for their BMW 125i and 128i models.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 125i and 128i
• Improves heat dissipation to reduce brake fade during aggressive driving
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Prevents rust and corrosion that can compromise braking efficiency
• Restores braking performance for safer vehicle operation

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 120 mm bolt circle diameter. Check rotor thickness before installation; replace if below the discard thickness of 18.4 mm. Clean the rotor surface of any protective coatings or oils before mounting to ensure optimal brake pad contact.

Quality Assurance and Warranty

Dynamite Friction manufactures the 633-31088R rotor to meet or exceed OEM specifications for fit and function on BMW 125i and 128i models. The rust-resistant coating and zinc black hat finish provide added durability against corrosion. Warranty details are available from the manufacturer and should be reviewed prior to purchase to confirm coverage terms.