Dynamite Friction 633-31138R Disc Brake Rotor - Rear Right

Overview of the DFC Brake Rotor for BMW X5

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-31138R) 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

This 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 pattern, featuring both drilled holes and slots, aids in removing brake dust, gases, and water from the rotor surface, which can improve braking consistency and reduce the risk of brake fade under demanding conditions.

The rotor’s nominal thickness is 20 mm, with a discard thickness of 18.4 mm, ensuring a clear maintenance threshold for safe operation. The rotor’s hat is finished with a zinc black coating, providing enhanced resistance to rust and corrosion, which is critical for longevity in various driving environments. The rotor’s bolt hole diameter is 16.6 mm, with five bolt holes arranged on a 120 mm bolt circle diameter, matching the BMW X5’s factory specifications for a precise fit.

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 combining functional design with corrosion resistance. This product line features rotors with drilled and slotted surfaces to improve braking performance and vented construction to manage heat buildup. The black zinc coating on the rotor hat enhances durability by protecting against rust, making these rotors suitable for drivers seeking reliable stopping power and extended rotor life on their BMW X5.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW X5 models
• Improves brake cooling and reduces fade during heavy braking
• Helps maintain consistent braking performance in wet or dusty conditions
• Addresses corrosion issues with rust-resistant coating
• Restores proper rotor thickness for safe braking operation

Installation Notes and Tips

Ensure the rotor surface and hub are clean and free of debris before installation. Verify the rotor thickness is above the discard thickness of 18.4 mm before mounting. Use the correct torque specifications for the 5 lug bolts with 16.6 mm diameter holes on a 120 mm bolt circle. Directional rotors must be installed with the correct rotation direction to maintain optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures the 633-31138R rotor to meet OEM specifications for the BMW X5. The rust-resistant zinc black finish and vented design contribute to the rotor’s durability and performance. Warranty details are provided by the manufacturer and should be confirmed at the time of purchase.