Dynamite Friction 631-74022L Disc Brake Rotor - Rear Left

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

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-74022L) is engineered for Audi and Volkswagen vehicles, including Golf, Jetta, R32, and TT Quattro models. This vented disc brake rotor features a directional, slotted, and drilled surface designed to enhance braking performance and heat dissipation.

• Nominal thickness: 22 mm with a discard thickness of 20 mm
• Vented rotor design for improved cooling
• Directional slotted and drilled surface for debris removal and heat management
• Rust-resistant zinc silver hat finish with plain disc finish
• 5 bolt holes with a 100 mm bolt circle diameter
• Overall height and height: 36.4 mm
• Outside diameter: 256 mm
• Center hole diameter: 65 mm
• Stud/lug hole diameter: 15.8 mm, quantity: 5

Details on the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction focuses on rotors that combine drilled holes and slots on the braking surface. This design helps maintain consistent braking by allowing gases, dust, and water to escape, reducing brake fade and improving overall rotor cooling. The zinc silver coating on the rotor hat provides corrosion resistance, extending the rotor's service life, especially in environments prone to rust.

Technical Description and Compatibility

This disc brake rotor is vented, which means it has internal vanes between the two friction surfaces to improve airflow and heat dissipation during braking. The rotor’s directional surface pattern, featuring both drilled holes and slots, is optimized for Audi and Volkswagen vehicles such as the Golf, Jetta, R32, and TT Quattro. The rotor measures 256 mm in outside diameter and 36.4 mm in height, with a nominal thickness of 22 mm and a discard thickness of 20 mm, ensuring it meets OEM specifications for safe replacement.

Common Applications and Problem Solving

• Reduces brake fade caused by overheating during aggressive driving or towing
• Improves wet weather braking by channeling water away from the rotor surface
• Helps prevent brake dust buildup for cleaner braking components
• Addresses rotor corrosion issues with rust-resistant zinc silver coating
• Maintains braking performance on Audi Golf, Jetta, R32, and TT Quattro models

Installation Notes and Tips

Ensure the rotor is installed on compatible vehicles with a 5-lug bolt pattern and 100 mm bolt circle diameter. Verify the rotor thickness before installation; replace if below the discard thickness of 20 mm. Properly torque lug nuts to manufacturer specifications to avoid rotor warping. It is recommended to inspect brake pads and hardware during rotor replacement for optimal braking system performance.

Quality Assurance

Dynamite Friction manufactures this rotor 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. Please consult product documentation or contact the manufacturer for warranty details specific to part number 631-74022L.