Dynamite Friction 631-63009L Disc Brake Rotor - Front Left

Overview of DFC Brake Rotor for Mercedes-Benz 300SD

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-63009L) is engineered specifically for the Mercedes-Benz 300SD. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation under demanding conditions.

• Nominal thickness: 22 mm with a discard thickness of 20 mm
• Overall height and rotor height: 66.4 mm
• Outside diameter: 278 mm
• Vented rotor design for improved cooling
• Directional slotted and drilled surface for optimized brake pad contact and debris removal
• Plain disc finish with zinc silver hat finish for corrosion resistance
• Rust resistant coating applied to extend rotor life
• 5 bolt holes with a bolt circle diameter of 112 mm
• Center hole diameter: 80 mm
• Stud/lug hole diameter: 15 mm, quantity: 5

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

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction offers rotors designed to balance performance and durability. The drilled and slotted surface pattern improves heat dissipation and helps maintain consistent braking by reducing gas and dust buildup. The zinc silver hat finish and rust resistant coating provide additional protection against corrosion, making this rotor suitable for vehicles like the Mercedes-Benz 300SD that require reliable stopping power under varied driving conditions.

Detailed Product Description

This disc brake rotor is vented to allow air to flow between the rotor surfaces, which helps reduce heat buildup during braking. The directional slotted and drilled surface enhances pad bite and assists in channeling away water and debris, improving braking consistency. With a nominal thickness of 22 mm and a discard thickness of 20 mm, this rotor maintains structural integrity and safety throughout its service life. The zinc silver finish on the rotor hat and the rust resistant coating on the disc surface help protect against corrosion, extending the rotor’s usable life. The rotor’s 5-bolt pattern with a 112 mm bolt circle diameter ensures proper fitment on the Mercedes-Benz 300SD.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Mercedes-Benz 300SD
• Improves braking performance in wet or dusty conditions
• Reduces brake fade caused by excessive heat buildup
• Helps eliminate brake noise and vibration from uneven rotor surfaces
• Prevents rust and corrosion-related rotor damage

Installation Notes and Tips

Ensure the rotor surface is clean and free of any contaminants before installation. Verify the rotor thickness is within specifications before mounting. Use proper torque settings on the 5 lug bolts to avoid warping. It is recommended to replace brake pads when installing new rotors to ensure optimal braking performance. Check for proper directional orientation of the rotor as indicated by the directional surface design.

Quality Assurance

Dynamite Friction manufactures this rotor to meet or exceed OEM specifications for the Mercedes-Benz 300SD. The rust resistant coating and zinc silver hat finish contribute to long-term durability. While no specific warranty information is provided, the rotor is designed for reliable performance and consistent braking under normal operating conditions.