Dynamite Friction 631-80042L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-80042L) is engineered for Mazda RX-8 vehicles 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 Mazda RX-8 models
• Directional slotted and drilled surface for improved brake cooling
• Vented rotor design to reduce heat buildup
• Zinc silver hat finish with rust-resistant coating
• 5 bolt holes with 114.3 mm bolt circle diameter
• Nominal thickness of 24 mm and discard thickness of 22 mm
• Overall diameter of 303 mm and center hole diameter of 72 mm

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 precision slots to optimize brake pad contact and reduce gas buildup. This product line is designed to provide consistent braking performance while minimizing rotor warping and brake fade. The silver zinc coating on the rotor hat offers enhanced corrosion resistance, extending the rotor's service life in various driving environments.

Technical Specifications and Features

This disc brake rotor is vented, allowing air to flow between the rotor surfaces to dissipate heat more effectively during braking. The directional surface pattern, featuring both drilled holes and slots, helps evacuate water, dust, and gases, improving brake pad bite and reducing the risk of glazing. The rotor measures 303 mm in outside diameter with a 72 mm center hole diameter, fitting securely on the Mazda RX-8 hub. The rotor thickness is nominally 24 mm, with a discard thickness of 22 mm, ensuring safe replacement intervals. The zinc silver hat finish and rust-resistant coating protect against corrosion, maintaining rotor integrity over time. The rotor includes five bolt holes with a 114.3 mm bolt circle diameter, matching the RX-8's wheel hub specifications.

Applications and Problem Solving

• Replacement rotor for worn or warped Mazda RX-8 brake rotors
• Improves heat dissipation to reduce brake fade during spirited driving
• Helps prevent brake pad glazing by evacuating gases and debris
• Corrosion-resistant coating extends rotor lifespan in humid or wet conditions
• Maintains consistent braking performance under heavy use

Installation Notes and Tips

Ensure the rotor surface is clean and free of any protective coatings before installation. Verify that the rotor thickness meets or exceeds the discard thickness of 22 mm to maintain safe braking performance. Use proper torque specifications for the 5 lug bolts on the Mazda RX-8 hub with a 114.3 mm bolt circle diameter. It is recommended to replace brake pads when installing new rotors to ensure optimal braking efficiency and rotor longevity.

Quality Assurance

Dynamite Friction manufactures the 631-80042L rotor to meet or exceed OEM specifications for the Mazda RX-8. The rust-resistant zinc silver coating and vented design contribute to durability and consistent performance. While no specific warranty information is provided, this rotor is engineered for reliable service life when installed and maintained according to manufacturer guidelines.