Dynamite Friction 631-74020L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-74020L) is engineered for reliable braking performance on select Audi and Volkswagen models. Designed with a vented, directional surface, this rotor enhances heat dissipation and braking consistency for vehicles like the Audi A1 and Volkswagen Golf.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 25 mm with a discard thickness of 22 mm
• Overall height: 34.2 mm; outside diameter: 288 mm
• Rust resistant zinc silver hat finish with plain disc finish
• Directional brake surface optimized for improved water and debris evacuation
• 5 bolt holes with a bolt circle diameter of 100 mm
• Center hole diameter: 65 mm; stud/lug hole diameter: 15.8 mm

Detailed Product Description

This DFC Brake Rotor - Drilled and Slotted - Silver is part of Dynamite Friction's DFC line, which focuses on delivering rotors with enhanced cooling and braking efficiency. The vented design allows air to flow between the rotor surfaces, reducing heat buildup during braking. The drilled and slotted surface improves pad bite and helps channel away water, dust, and gases, which can otherwise reduce braking effectiveness. The rotor's zinc silver hat finish provides corrosion resistance, extending the rotor's service life, especially in environments prone to rust.

With a nominal thickness of 25 mm and a discard thickness of 22 mm, this rotor maintains structural integrity and performance throughout its lifespan. The directional surface design requires proper installation orientation to maximize its benefits. This rotor is compatible with various Audi and Volkswagen models, including the Audi A1 and Volkswagen Beetle, Golf, Jetta, and Polo, ensuring a precise fit and reliable braking performance.

Applications and Problem Solving

• Improves braking performance on Audi A1 and Volkswagen Golf models
• Reduces brake fade caused by excessive heat buildup
• Enhances water and debris evacuation for consistent stopping power in wet conditions
• Prevents rust and corrosion with zinc silver coating
• Restores rotor surface integrity for vehicles experiencing uneven wear or scoring

Installation Notes and Tips

Ensure the rotor is installed with the directional surface facing the correct rotation direction as indicated by the vehicle manufacturer. Verify bolt hole alignment with the 5-lug pattern and 100 mm bolt circle diameter. Check rotor thickness before installation to confirm it meets or exceeds the discard thickness of 22 mm. Proper torque specifications should be followed to avoid warping or uneven wear.

Quality Assurance

Dynamite Friction manufactures the DFC Brake Rotor - Drilled and Slotted - Silver to meet or exceed OEM standards for fit, form, and function. The rust-resistant coating and vented design contribute to durability and consistent braking performance. While specific warranty details are not provided, Dynamite Friction products are generally backed by quality control processes to ensure reliability and safety.