Dynamite Friction 633-54139L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Black (part number 633-54139L) is engineered for reliable braking performance on Ford and Mazda trucks. Designed specifically for models like the Ford Ranger and Mazda B-series trucks, this rotor combines durability with enhanced heat dissipation.

• Disc type: Vented disc brake rotor
• Surface finish: Slotted and drilled for improved cooling
• Rust resistant zinc black hat finish
• Nominal thickness: 26.1 mm with discard thickness at 24.5 mm
• Five 1/2-20 bolt holes with 114.3 mm bolt circle diameter
• Directional brake surface for optimized braking efficiency
• Outside diameter: 261 mm; overall height: 108 mm

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Black

The DFC Brake Rotor - Drilled and Slotted - Black line by Dynamite Friction focuses on rotors that feature both drilled holes and slots on the braking surface. This design aids in heat dissipation and helps reduce brake fade under demanding conditions. The zinc black coating on the rotor hat provides corrosion resistance, extending the rotor's service life. This product line is tailored for vehicles requiring vented rotors with directional braking surfaces, such as the Ford Ranger and Mazda B2300, B3000, and B4000 models.

Detailed Product Description

This vented disc brake rotor is engineered with a slotted and drilled surface type to enhance heat dissipation and maintain consistent braking performance. The rotor's nominal thickness of 26.1 mm ensures structural integrity, while the discard thickness of 24.5 mm indicates when replacement is necessary to maintain safety. The zinc black finish on the rotor hat offers rust resistance, which is critical for vehicles exposed to varying weather conditions. The rotor features five bolt holes with a 1/2-20 diameter and a bolt circle diameter of 114.3 mm, matching the factory specifications for compatible Ford and Mazda trucks. The directional brake surface is designed to optimize braking efficiency and reduce noise and vibration during operation.

Applications and Problem Solving

• Compatible with Ford Ranger and Mazda B2300, B3000, B4000 models
• Addresses brake fade caused by overheating during heavy braking
• Reduces rust and corrosion on rotor hats for longer service life
• Improves braking response with slotted and drilled surface design
• Maintains structural integrity with vented rotor design for heat management

Installation Notes and Tips

Ensure the rotor is installed with the directional surface oriented correctly according to the vehicle’s rotation direction. Verify bolt hole alignment with the 114.3 mm bolt circle diameter and use the specified 1/2-20 bolts. Check rotor thickness before installation to confirm it meets or exceeds the nominal thickness of 26.1 mm and is above the discard thickness of 24.5 mm. Proper cleaning of the rotor surface before installation is recommended to remove any protective coatings or residues.

Quality Assurance

Dynamite Friction manufactures this rotor to meet OEM specifications for fitment and performance on Ford and Mazda trucks. The rust-resistant coating and vented design contribute to durability and consistent braking. While no specific warranty information is provided, the rotor is designed to comply with industry standards for safety and reliability.