Dynamite Friction 631-03021L Disc Brake Rotor - Rear Left

Overview of the DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-03021L) is engineered for reliable braking performance on select Hyundai and Kia models. Designed with a solid, directional rotor surface, this disc brake rotor offers enhanced heat dissipation and consistent stopping power.

• Compatible with Hyundai Azera, Sonata, and Kia Cadenza, Optima models
• Solid disc brake rotor with drilled and slotted surface
• Nominal thickness of 10 mm and discard thickness of 8.4 mm
• Rust-resistant zinc silver hat finish with plain disc finish
• 5 bolt holes with a bolt circle diameter of 114.3 mm
• Directional brake surface for optimized performance
• Overall diameter of 283 mm and height of 54.5 mm

Detailed Product Features and Specifications

This DFC Brake Rotor - Drilled and Slotted - Silver is a solid rotor type, designed to provide consistent braking without the complexity of vented rotors. The rotor features a drilled and slotted surface that helps to reduce brake fade by improving heat dissipation and allowing gases and debris to escape during braking. The directional surface design ensures proper rotation for optimal performance and longevity.

The rotor’s nominal thickness is 10 mm, with a discard thickness of 8.4 mm, indicating when replacement is necessary to maintain safe braking. The zinc silver coating on the hat offers corrosion resistance, extending the rotor’s service life, especially in environments prone to rust. The rotor fits vehicles with a 5-lug bolt pattern and a bolt circle diameter of 114.3 mm, matching the specifications of the Hyundai Azera, Sonata, and Kia Cadenza, Optima models.

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

The DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction focuses on delivering rotors with enhanced surface treatments to improve braking efficiency and rotor durability. This product line combines drilled holes and slots on a solid rotor base, providing a balance between heat management and structural integrity. The silver zinc coating on the hat further protects against corrosion, making it suitable for drivers seeking reliable braking components for their Hyundai and Kia vehicles.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Hyundai Azera, Sonata, Kia Cadenza, and Optima
• Improves braking performance by reducing heat buildup and brake fade
• Addresses rotor surface corrosion with rust-resistant coating
• Helps eliminate brake noise and vibration caused by uneven rotor wear
• Maintains proper braking response with directional drilled and slotted design

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (8.4 mm) before installation
• Clean rotor surface and hub mounting area to prevent uneven wear
• Torque lug nuts to manufacturer specifications for 5-lug, 114.3 mm bolt circle
• Verify directional rotor orientation matches wheel rotation direction
• Inspect brake pads for wear and replace if necessary during rotor installation

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-03021L rotor to meet industry standards for fitment and performance on Hyundai and Kia vehicles. The rust-resistant zinc silver coating and precise machining ensure durability and consistent braking. Warranty details should be confirmed with the point of purchase or manufacturer documentation.