Dynamite Friction 631-80069L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver is engineered for Mazda CX-9 models requiring reliable braking performance. This vented disc brake rotor, part number 631-80069L, features a directional, slotted and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Mazda CX-9 vehicles
• Part Number: 631-80069L
• Vented disc brake rotor with drilled and slotted surface
• Rust resistant zinc silver hat finish
• Directional brake surface for optimized performance
• 5 bolt holes with 114.3 mm bolt circle diameter
• Nominal thickness of 28 mm and discard thickness of 26 mm
• Overall diameter of 319.5 mm and center hole diameter of 72 mm

Product Line Details: DFC Brake Rotor - Drilled and Slotted - Silver

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction is designed to provide enhanced braking efficiency through its vented rotor design combined with a drilled and slotted surface. This configuration helps reduce brake fade by improving heat dissipation and removing debris from the rotor surface. The zinc silver coating on the rotor hat offers corrosion resistance, extending the rotor's service life under various driving conditions.

Technical Specifications and Features

This disc brake rotor is vented to allow air flow between the rotor surfaces, which aids in cooling during heavy braking. The rotor’s surface is both drilled and slotted, providing channels for gas and dust to escape, which helps maintain consistent brake pad contact. The directional design ensures the slots and drill patterns are optimized for the rotor’s rotation direction, improving braking response. The rotor has a nominal thickness of 28 mm and a discard thickness of 26 mm, indicating when replacement is necessary to maintain safety and performance. The zinc silver hat finish offers rust resistance, protecting the rotor from corrosion over time. The rotor features five bolt holes with a bolt circle diameter of 114.3 mm, matching the Mazda CX-9’s specifications.

Applications and Problem Solving

• Replacement rotor for worn or warped brake rotors on Mazda CX-9
• Improves heat dissipation to reduce brake fade during heavy braking
• Helps maintain consistent braking performance in wet or dusty conditions
• Addresses rotor corrosion issues with rust resistant coating
• Restores proper rotor thickness for safe braking operation

Installation Notes and Tips

Ensure the rotor is installed with the directional surface oriented correctly according to the vehicle’s rotation. Verify that the bolt hole pattern matches the Mazda CX-9 specifications (5 bolts, 114.3 mm bolt circle diameter). Measure rotor thickness before installation to confirm it meets or exceeds the nominal thickness of 28 mm. Clean the rotor surface to remove any protective coatings or debris before mounting. Proper torque specifications should be followed when securing the rotor to avoid warping.

Quality Assurance

Dynamite Friction manufactures this rotor to meet OEM standards for fit and function on Mazda CX-9 vehicles. The rust resistant zinc silver coating enhances durability against corrosion. While no specific warranty information is provided, the rotor’s design and materials support reliable braking performance when installed and maintained properly.