Dynamite Friction 631-74021L Disc Brake Rotor - Front Left

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

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-74021L) is engineered for Audi and Volkswagen vehicles, including Golf, Jetta, TT, and TT Quattro models. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance braking performance and heat dissipation.

• Compatible with Audi and Volkswagen Golf, Jetta, TT, and TT Quattro
• Part number 631-74021L for precise identification
• Vented rotor design for improved cooling
• Directional slotted and drilled surface for enhanced brake pad contact and debris removal
• Rust-resistant zinc silver hat finish with plain disc finish
• 5 bolt holes with a 100mm bolt circle diameter
• Nominal thickness of 25mm and discard thickness of 23mm
• Overall diameter of 312mm and height of 34.2mm

Detailed Product Features and Specifications

The DFC Brake Rotor - Drilled and Slotted - Silver is part of Dynamite Friction's DFC product line, which focuses on delivering reliable braking components with enhanced surface treatments. This rotor features a vented design that helps dissipate heat more effectively during braking, reducing the risk of brake fade. The directional slotted and drilled surface improves water, gas, and dust evacuation from the rotor surface, maintaining consistent brake pad contact and performance under various driving conditions.

The rotor's hat is coated with a zinc silver finish to resist rust and corrosion, extending the rotor's service life. The disc itself has a plain finish, providing a smooth braking surface. With a bolt hole quantity of five and a bolt circle diameter of 100mm, this rotor is designed to fit securely on compatible Audi and Volkswagen models. The center hole diameter measures 65mm, and the stud/lug hole diameter is 15.75mm, ensuring proper alignment and fitment.

Applications and Problem Solving

• Replaces worn or warped rotors on Audi Golf, Jetta, TT, and TT Quattro
• Improves braking performance by reducing heat buildup and brake fade
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Resists rust and corrosion for longer rotor life in humid or wet environments
• Maintains consistent brake pad contact for smoother stopping power

Installation Notes and Tips

When installing the 631-74021L rotor, ensure the rotor surface is clean and free of any protective coatings before mounting. Verify the bolt hole pattern and center hole diameter match your vehicle specifications. It is recommended to replace brake pads simultaneously to ensure optimal braking performance. Proper torque specifications should be followed when securing the rotor to avoid warping or uneven wear.

Quality Assurance and Warranty

Dynamite Friction's DFC Brake Rotor line is manufactured to meet or exceed OEM standards for fit, form, and function. The rust-resistant zinc silver hat finish and vented rotor design contribute to durability and consistent braking performance. Warranty information is typically provided by the manufacturer; please consult Dynamite Friction or your parts provider for specific warranty details related to part number 631-74021L.