Dynamite Friction 631-73032L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-73032L) is engineered for Audi S4 models requiring reliable braking performance. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power under demanding conditions.

• Compatible with Audi S4 vehicles
• Part Number: 631-73032L
• Drilled and slotted surface for improved brake cooling
• Vented rotor design to reduce heat buildup
• Rust resistant zinc silver hat finish
• Directional brake surface for optimized performance
• 5 bolt holes with 112mm bolt circle diameter
• Nominal thickness of 22mm and discard thickness of 20mm
• Overall diameter of 300mm and height of 36mm

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 surface designs to improve braking efficiency and rotor longevity. The drilled and slotted surface helps evacuate gases, dust, and water from the braking surface, reducing brake fade and improving wet weather performance. The vented rotor construction allows air to flow between the rotor faces, aiding in heat dissipation during heavy braking.

The rotor features a plain disc finish combined with a zinc silver rust-resistant coating on the hat, providing corrosion protection and maintaining structural integrity over time. With a nominal thickness of 22mm and a discard thickness of 20mm, this rotor meets strict wear specifications to ensure safe replacement intervals. The directional surface design is optimized for the Audi S4's braking system, ensuring consistent contact and performance.

Applications and Problem Solving

• Reduces brake fade during aggressive driving or towing
• Improves braking performance in wet or humid conditions
• Helps prevent rotor warping caused by excessive heat
• Minimizes rust and corrosion on rotor hats for longer service life
• Maintains consistent braking feel and pedal response

Installation Notes and Tips

Ensure the rotor is installed with the directional surface oriented correctly according to the vehicle’s rotation direction. Verify that the bolt hole pattern (5 holes, 112mm bolt circle diameter) matches the Audi S4 specifications. Measure rotor thickness before installation to confirm it meets or exceeds the discard thickness of 20mm. Properly torque all lug nuts to manufacturer specifications to avoid rotor distortion.

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 no specific warranty information is provided, this rotor is designed for reliable service life when installed and maintained according to manufacturer guidelines.