Dynamite Friction 631-54139L Disc Brake Rotor - Front Left

Reliable Brake Performance for Ford and Mazda Trucks

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-54139L) is engineered to provide consistent braking for Ford Ranger and Mazda B-series trucks. Designed specifically for models B2300, B3000, B4000, and Ranger, this vented disc brake rotor offers enhanced heat dissipation and improved stopping power.

• Disc type: Vented, drilled, and slotted for optimal cooling and debris removal
• Nominal thickness: 26.1 mm with a discard thickness of 24.5 mm
• Overall height and rotor height: 108 mm
• Outside diameter: 261 mm
• Hat finish: Zinc silver coating for corrosion resistance
• Rust resistant coating applied to extend rotor life
• Bolt hole quantity: 5 with 1/2-20 diameter and 114.3 mm bolt circle diameter
• Directional brake surface for improved braking efficiency
• Center hole diameter: 63.6 mm

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

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on delivering rotors with enhanced heat management and surface durability. The drilled and slotted design helps reduce brake fade by allowing gases and heat to escape, while the zinc silver hat finish and rust resistant coating protect against corrosion. This product line is tailored for drivers seeking reliable braking components compatible with specific Ford and Mazda truck models.

Product Details and Specifications

This disc brake rotor features a vented design that improves airflow to reduce heat buildup during braking. The slotted and drilled surface enhances pad bite and helps clear water and debris from the rotor surface, maintaining consistent braking performance. With a nominal thickness of 26.1 mm and a discard thickness of 24.5 mm, this rotor meets the necessary specifications for safe replacement. The zinc silver hat finish and rust resistant coating provide additional protection against environmental wear, extending the rotor's service life. The rotor is designed with five bolt holes (1/2-20 diameter) on a 114.3 mm bolt circle diameter, ensuring proper fitment on compatible Ford Ranger and Mazda B-series trucks.

Compatible Vehicles and Common Applications

• Replacement rotor for Ford Ranger models
• Compatible with Mazda B2300, B3000, and B4000 trucks
• Ideal for addressing brake fade and overheating issues
• Helps resolve uneven brake pad wear and rotor warping
• Suitable for restoring braking performance on vented rotor setups

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it is above the discard thickness of 24.5 mm. Clean the rotor surface to remove any protective coatings or debris before mounting. Verify bolt hole alignment with the 114.3 mm bolt circle diameter and use the correct lug nuts for the 1/2-20 bolt holes. Directional rotors must be installed following the indicated rotation direction to maintain optimal braking performance.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor to meet OEM specifications for fit and function. The rust resistant coating and zinc silver hat finish contribute to long-term durability. While specific warranty details are not provided, Dynamite Friction products typically adhere to industry standards for quality and reliability.