Dynamite Friction 633-31067R 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 633-31067R) is engineered for BMW models including the 120i, 125i, 128i, 323i, 325i, 325xi, 328i, and 328xi. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with BMW 120i, 125i, 128i, 323i, 325i, 325xi, 328i, 328xi
• Part Number: 633-31067R
• Disc diameter: 300 mm with 5 bolt holes (14.7 mm diameter)
• Nominal thickness: 24 mm; discard thickness: 22.4 mm
• Vented rotor with directional slotted and drilled surface
• Hat finished in zinc black with rust-resistant coating
• Bolt circle diameter and stud/lug hole circle diameter: 120 mm
• Center hole diameter: 79 mm; overall height: 73.8 mm

Detailed Product Description

The DFC Brake Rotor - Drilled and Slotted - Black from Dynamite Friction is designed to meet the specific braking requirements of select BMW vehicles. Its vented design improves airflow to reduce heat buildup during braking, which helps maintain consistent performance and reduces the risk of brake fade. The rotor’s surface is both drilled and slotted in a directional pattern, which aids in expelling gases, dust, and water from the braking surface, enhancing pad bite and overall stopping power.

Constructed with a plain disc finish and a zinc black hat finish, this rotor offers corrosion resistance to extend service life. The rust-resistant coating further protects the rotor from environmental elements. With a nominal thickness of 24 mm and a discard thickness of 22.4 mm, this rotor provides a balance between durability and performance. The 5-bolt hole pattern with a 120 mm bolt circle diameter ensures proper fitment and secure mounting on compatible BMW models.

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

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on rotors that combine drilled holes and slots with a corrosion-resistant black zinc finish on the hat. This product line is designed to improve braking efficiency and rotor longevity, particularly for vehicles requiring vented rotors with directional braking surfaces. The combination of drilled and slotted features helps maintain clean contact surfaces and consistent braking under various driving conditions.

Applications and Problem Solving

• Reduces brake fade caused by heat buildup during aggressive or repeated braking
• Improves water and debris evacuation from the rotor surface for better wet-weather braking
• Minimizes brake dust accumulation on the rotor surface
• Prevents rust and corrosion on the rotor hat and disc for longer service life
• Ensures proper fitment and secure mounting on BMW 120i, 125i, 128i, 323i, 325i, 325xi, 328i, and 328xi models

Installation Notes and Tips

When installing the 633-31067R rotor, ensure the rotor is mounted with the directional surface pattern oriented correctly according to the vehicle’s rotation direction. Verify that the bolt hole pattern (5 holes, 14.7 mm diameter) and bolt circle diameter (120 mm) match the vehicle specifications. It is recommended to inspect brake pads and hardware during installation and replace if necessary to maintain optimal braking performance.

Quality Assurance

Dynamite Friction manufactures the DFC Brake Rotor - Drilled and Slotted - Black to meet or exceed OEM specifications for fit, form, and function. The rotor includes a rust-resistant coating and zinc black hat finish to enhance durability. While specific warranty details are not provided, Dynamite Friction products are generally backed by quality standards consistent with professional automotive replacement parts.