Dynamite Friction 631-74020R Disc Brake Rotor - Front Right

Overview of the DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-74020R) 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 braking surface optimized for heat and debris management
• 5 bolt holes with a 100 mm bolt circle diameter
• Center hole diameter: 65 mm; stud/lug hole diameter: 15.8 mm

Detailed Product Features and Specifications

This DFC Brake Rotor - Drilled and Slotted - Silver is constructed with a vented design to improve airflow and reduce brake fade during extended use. The rotor features a drilled and slotted surface pattern that helps evacuate gases, dust, and water, maintaining consistent pad contact and braking efficiency. The directional surface type is specifically engineered to optimize performance when installed in the correct orientation.

The rotor’s nominal thickness of 25 mm ensures durability, while the discard thickness of 22 mm indicates the minimum safe thickness before replacement is necessary. The zinc silver coating on the hat provides corrosion resistance, extending the rotor’s service life, especially in environments prone to rust. With 5 bolt holes arranged on a 100 mm bolt circle diameter, this rotor fits securely on compatible hubs.

Compatible Vehicles and Applications

This rotor is compatible with various Audi and Volkswagen models, including:

• Audi A1
• Volkswagen Beetle
• Volkswagen Golf
• Volkswagen Jetta
• Volkswagen Polo

It is designed to replace original equipment rotors on these vehicles, providing consistent braking performance for daily driving and moderate performance needs.

Common Issues Addressed by This Brake Rotor

• Brake fade caused by overheating during extended braking
• Uneven pad wear due to poor heat dissipation
• Corrosion and rust buildup on rotor surfaces
• Reduced braking efficiency from gas and dust accumulation
• Vibration or noise from warped or damaged rotors

Installation Notes and Tips

Ensure the rotor is installed with the directional surface facing the correct rotation direction for optimal performance. Verify that the rotor thickness is above the discard thickness before installation. Clean the rotor surface to remove any protective coatings or contaminants before mounting. Use proper torque specifications for the 5 lug bolts to secure the rotor firmly.

Quality Assurance and Warranty

Dynamite Friction’s DFC Brake Rotor line is manufactured to meet or exceed OEM specifications for fit, form, and function. The rust-resistant coating and vented design contribute to long-term durability. Please consult the manufacturer or distributor for specific warranty details related to part number 631-74020R.