Dynamite Friction 631-74004L Disc Brake Rotor - Front Left

Reliable Performance with Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver offers precise braking performance for select Audi and Volkswagen models. Designed to meet specific fitment requirements, this rotor ensures consistent stopping power and durability under various driving conditions.

• Part Number: 631-74004L
• Disc Type: Vented, drilled and slotted surface
• Nominal Thickness: 20 mm with a discard thickness of 18 mm
• Rust-resistant zinc silver hat finish
• Directional brake surface for optimized heat dissipation
• 4 bolt holes with a 100 mm bolt circle diameter
• Outside diameter of 239 mm and overall height of 38.6 mm

About the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction is engineered to provide enhanced heat dissipation and improved braking response. The drilled and slotted design helps reduce brake fade by allowing gases and debris to escape, while the vented rotor construction promotes airflow to maintain optimal operating temperatures. The zinc silver hat finish adds corrosion resistance, extending rotor life especially in humid or wet environments.

Detailed Product Description

This disc brake rotor features a vented design with a 239 mm outside diameter and a 38.6 mm overall height, tailored for select Audi and Volkswagen vehicles including the 4000, Cabriolet, Coupe, Derby, Golf, Jetta, and Rabbit Convertible models. The rotor’s surface is both drilled and slotted, providing directional braking surfaces that improve pad bite and reduce heat buildup. The rotor’s nominal thickness is 20 mm, with a discard thickness of 18 mm, ensuring safe replacement intervals. The zinc silver hat finish offers rust resistance, helping maintain structural integrity and appearance over time. The rotor includes 4 bolt holes with a 100 mm bolt circle diameter and a center hole diameter of 65 mm, matching factory specifications for proper fitment.

Applications and Problem Solving

• Compatible with Audi and Volkswagen models such as Golf, Jetta, and Cabriolet
• Addresses brake fade caused by excessive heat during aggressive driving
• Reduces brake dust and debris buildup with slotted and drilled surface
• Helps prevent rotor warping through vented design and heat dissipation
• Improves braking consistency in wet or corrosive environments with rust-resistant coating

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 18 mm before installation. Clean the rotor surface to remove any protective coatings or residues prior to mounting. Verify bolt hole alignment with the 4-lug, 100 mm bolt circle diameter pattern. Use proper torque specifications for lug nuts to avoid rotor distortion. Directional rotors should be installed following the indicated rotation direction for optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures this rotor to meet or exceed OEM specifications for fit, form, and function. The rust-resistant zinc silver hat finish enhances durability against corrosion. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure reliable braking performance on compatible Audi and Volkswagen vehicles.