Dynamite Friction 631-80039L Disc Brake Rotor - Rear Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-80039L) is engineered for reliable braking performance on Mazda 3 and Mazda 3 Sport models. This solid disc brake rotor features a directional, slotted, and drilled surface designed to enhance heat dissipation and maintain consistent stopping power.

• Compatible with Mazda 3 and Mazda 3 Sport
• Part Number: 631-80039L
• Directional drilled and slotted surface for improved braking
• Solid rotor design with zinc silver hat finish
• Rust resistant coating for extended durability
• 5 bolt holes with 114.3 mm bolt circle diameter
• Nominal thickness of 11 mm and discard thickness of 9 mm
• Outside diameter of 265 mm and overall height of 41 mm

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

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction offers rotors with a combination of drilled holes and slots on the braking surface. This design helps to reduce brake fade by improving heat and gas dissipation during braking. The zinc silver finish on the rotor hat provides corrosion resistance, while the rust resistant coating on the rotor surface extends the rotor's service life. This product line is tailored for drivers seeking consistent braking performance under varied driving conditions.

Technical Specifications and Features

This rotor is a solid type with a directional braking surface, featuring both drilled holes and slots to optimize cooling and debris removal. The rotor has a nominal thickness of 11 mm and a discard thickness of 9 mm, ensuring safe replacement intervals. The rotor’s outside diameter measures 265 mm, with an overall height of 41 mm and a center hole diameter of 71.8 mm. It includes 5 bolt holes with a bolt circle diameter of 114.3 mm, matching the Mazda 3 and 3 Sport bolt pattern precisely.

Applications and Problem Solving

• Replaces worn or warped brake rotors on Mazda 3 and Mazda 3 Sport
• Addresses brake fade caused by overheating during aggressive driving
• Improves braking response in wet conditions by channeling water away
• Reduces brake dust buildup with slotted surface design
• Prevents rust and corrosion for longer rotor life

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 9 mm before installation. Clean the rotor surface to remove any protective coatings or oils prior to mounting. Verify the bolt hole pattern and center hole diameter match your vehicle specifications. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Follow manufacturer torque specifications when tightening lug nuts.

Quality Assurance

Dynamite Friction manufactures this rotor with rust resistant coatings and zinc silver hat finish to enhance durability. The part number 631-80039L is designed specifically for Mazda 3 and Mazda 3 Sport models, ensuring precise fitment and reliable performance. Warranty information is available through the manufacturer or authorized distributors.