Dynamite Friction 633-31138L Disc Brake Rotor - Rear Left

Overview of the DFC Brake Rotor for BMW X5

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31138L) is engineered specifically for BMW X5 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 X5 vehicles
• Directional drilled and slotted surface for improved heat dissipation
• Vented rotor design to reduce brake fade
• Zinc black coated hat for corrosion resistance
• Nominal thickness of 20 mm with discard thickness at 18.4 mm
• 5 bolt holes with 16.6 mm diameter and 120 mm bolt circle diameter
• Overall diameter of 324 mm and height of 80.1 mm

Detailed Product Features and Specifications

The DFC Brake Rotor - Drilled and Slotted - Black is designed with a vented rotor type that helps maintain optimal braking temperatures by allowing air to flow between the rotor surfaces. The directional surface features both drilled holes and slots, which aid in removing brake dust, gases, and water from the contact area, improving braking consistency under various conditions. The rotor’s nominal thickness is 20 mm, with a discard thickness of 18.4 mm, ensuring a clear maintenance threshold for safety. The rotor’s hat is finished with a zinc black coating, providing enhanced resistance to rust and corrosion, which is critical for longevity in diverse driving environments.

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 delivering rotors that balance performance and durability. This product line features rotors with drilled and slotted surfaces designed to improve braking efficiency and heat management. The black zinc coating on the rotor hat adds a layer of protection against corrosion, making these rotors suitable for drivers seeking reliable stopping power with extended service life on their BMW X5.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW X5 models
• Improves brake cooling to reduce fade during heavy braking
• Helps maintain consistent brake pad contact by removing debris and gases
• Prevents rust buildup on rotor hats for longer component life
• Supports directional braking performance for enhanced vehicle control

Installation Notes and Tips

Ensure the rotor is installed on the correct side of the vehicle to maintain the directional surface orientation. Verify that the bolt hole pattern (5 holes, 16.6 mm diameter, 120 mm bolt circle) matches the vehicle hub. Measure rotor thickness before installation and replace if below the discard thickness of 18.4 mm. Proper torque specifications should be followed when securing the rotor to avoid warping.

Quality Assurance and Warranty

Dynamite Friction manufactures the 633-31138L rotor to meet OEM standards for fitment and performance on BMW X5 vehicles. The rust-resistant zinc black coating and vented design contribute to the rotor’s durability. Warranty details are provided by the manufacturer and should be reviewed prior to purchase.