Dynamite Friction 631-54066L Disc Brake Rotor - Rear Left

Overview of the Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-54066L) is engineered for Ford Focus models requiring reliable braking performance. This solid disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Ford Focus vehicles
• Part number: 631-54066L
• Solid disc rotor with drilled and slotted surface
• Directional brake surface for optimized performance
• Rust-resistant zinc silver hat finish
• Nominal thickness of 11 mm with a discard thickness of 9 mm
• Five bolt holes with 13.7 mm diameter and 108 mm bolt circle diameter
• Overall diameter of 271 mm and height of 40.7 mm

Detailed Product Features and Specifications

This DFC Brake Rotor - Drilled and Slotted - Silver is a solid rotor designed to fit Ford Focus models, providing a balance of durability and performance. The rotor’s surface is both drilled and slotted, which helps to reduce brake fade by improving heat dissipation and allowing gases and debris to escape during braking. The directional surface design ensures proper installation orientation for optimal braking efficiency.

The rotor measures 271 mm in outside diameter with an overall height of 40.7 mm. It features five bolt holes, each with a diameter of 13.7 mm, arranged on a 108 mm bolt circle diameter, matching the Ford Focus hub specifications. The hat section is coated with a zinc silver finish to resist rust and corrosion, extending the rotor’s service life. The nominal thickness is 11 mm, with a discard thickness of 9 mm, indicating when replacement is necessary to maintain safe braking performance.

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

The DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction focuses on rotors that combine drilled holes and slots on the braking surface. This design improves heat dissipation and helps maintain consistent brake pad contact, which is essential for vehicles like the Ford Focus that require dependable braking under various driving conditions. The silver zinc coating on the rotor hat enhances corrosion resistance, making these rotors suitable for long-term use.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Ford Focus models
• Improves braking performance by reducing heat buildup and brake fade
• Helps eliminate brake noise caused by glazing or uneven rotor surfaces
• Addresses rust and corrosion issues on rotor hats with zinc silver coating
• Restores proper brake rotor thickness for safe stopping distances

Installation Notes and Tips

• Ensure the rotor is installed with the directional surface facing the correct rotation direction
• Check that the bolt hole pattern (5 holes, 13.7 mm diameter, 108 mm bolt circle) matches the vehicle hub
• Measure rotor thickness before installation; replace if below discard thickness of 9 mm
• Clean rotor surface before installation to remove any protective coatings or debris
• Torque lug nuts to manufacturer specifications to avoid rotor warping

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-54066L rotor to meet industry standards for fitment and performance on Ford Focus vehicles. The rust-resistant zinc silver coating on the rotor hat helps extend service life by preventing corrosion. While specific warranty details are not provided, Dynamite Friction products typically adhere to quality control processes to ensure reliable braking components.