Dynamite Friction 631-54040L Disc Brake Rotor - Front Left

Reliable Brake Performance for Ford and Mercury Vehicles

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-54040L) is engineered to provide consistent braking performance for select Ford and Mercury models. Designed specifically for vehicles like the Mustang, Cougar, and Villager, this vented disc brake rotor offers enhanced heat dissipation and improved stopping power.

• Disc type: Vented, drilled, and slotted for optimal cooling
• Nominal thickness: 21 mm with a discard thickness of 19.8 mm
• Directional brake surface for efficient water and debris evacuation
• Rust-resistant zinc silver hat finish with plain disc finish
• Five bolt holes with 1/2-20 diameter and 114.3 mm bolt circle diameter
• Outside diameter of 288 mm and overall height of 58.6 mm
• Center hole diameter of 61.7 mm for precise fitment

About the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled and slotted surface types with a vented rotor design. This combination enhances heat dissipation and helps maintain braking efficiency under demanding conditions. The zinc silver hat finish adds corrosion resistance, extending rotor life while maintaining a clean appearance. This product line is tailored for drivers seeking reliable braking components compatible with specific Ford and Mercury models.

Technical Details and Compatibility

This disc brake rotor features a nominal thickness of 21 mm and a discard thickness of 19.8 mm, ensuring safe replacement intervals. The rotor’s directional surface design, with both drilled holes and slots, aids in removing brake dust, gases, and water from the rotor surface, which is critical for maintaining consistent braking performance. The vented rotor type improves airflow to reduce heat buildup during braking. With five bolt holes sized at 1/2-20 and a bolt circle diameter of 114.3 mm, this rotor fits securely on compatible hubs. The zinc silver hat finish provides rust resistance, helping to prevent corrosion in various driving environments.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on Ford Mustang, Mercury Cougar, and Villager
• Improves heat dissipation to reduce brake fade during heavy braking
• Helps eliminate brake noise caused by uneven rotor surfaces
• Restores braking efficiency affected by rust or corrosion on original rotors
• Directional design assists in maintaining braking performance in wet conditions

Installation Notes and Tips

Ensure the rotor surface and hub mounting area are clean and free of debris before installation. Verify the rotor thickness is above the discard thickness of 19.8 mm before use. Use proper torque specifications for the 5 lug bolts (1/2-20) to secure the rotor. The directional surface requires installation with the correct rotation direction, so confirm the rotor is mounted accordingly to maintain optimal performance.

Quality Assurance

Dynamite Friction manufactures this rotor to meet or exceed OEM specifications for fit, form, and function. The rust-resistant zinc silver hat finish helps extend the rotor’s service life. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure reliability and durability for Ford Mustang, Mercury Cougar, and Villager brake systems.