Dynamite Friction 631-21049L Disc Brake Rotor - Rear Left

Overview of DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver offers reliable braking performance for Hyundai K5 and Kia Sonata models. Designed with precision, this disc brake rotor ensures consistent stopping power and enhanced heat dissipation under demanding conditions.

• Part Number: 631-21049L
• Disc Type: Drilled and slotted, directional surface
• Outside Diameter: 325 mm
• Nominal Thickness: 12 mm with a discard thickness of 10 mm
• Hat Finish: Zinc silver coating for corrosion resistance
• Rust Resistant Coating: Yes
• Bolt Hole Quantity: 5 with 12.6 mm diameter
• Bolt Circle Diameter: 114.3 mm
• Center Hole Diameter: 76 mm
• Height: 32.35 mm

Details on the DFC Brake Rotor - Drilled and Slotted - Silver Line

The DFC Brake Rotor - Drilled and Slotted - Silver line by Dynamite Friction is engineered to provide improved braking efficiency through its directional drilled and slotted surface. This design helps to reduce brake fade by allowing gases and debris to escape, while the zinc silver hat finish offers enhanced protection against rust and corrosion. This rotor line is tailored for vehicles requiring precise fitment and durability, such as the Hyundai K5 and Kia Sonata.

Product Specifications and Features

This disc brake rotor features a 325 mm outside diameter and a nominal thickness of 12 mm, with a discard thickness set at 10 mm to ensure safe replacement intervals. The rotor’s directional surface combines drilled holes and slots to optimize heat dissipation and maintain consistent braking performance. The zinc silver hat finish and rust-resistant coating extend the rotor’s service life by protecting against environmental wear. The rotor mounts with five bolt holes, each 12.6 mm in diameter, arranged on a 114.3 mm bolt circle diameter, ensuring compatibility with specified Hyundai and Kia models.

Applications and Problem Solving

• Compatible with Hyundai K5 and Kia Sonata models requiring 325 mm rotors
• Addresses brake fade caused by overheating during heavy braking
• Helps reduce brake dust and debris buildup on rotor surface
• Prevents rust and corrosion for longer rotor lifespan
• Maintains braking efficiency with directional drilled and slotted design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 10 mm before installation. Properly clean the rotor surface to remove any protective coatings or contaminants. Verify bolt hole alignment with the vehicle’s hub using the 5-bolt, 114.3 mm bolt circle pattern. Use appropriate torque specifications for lug nuts to avoid rotor warping. Directional rotors must be installed following the indicated rotation direction for optimal performance.

Quality Assurance

Dynamite Friction manufactures this rotor to meet or exceed OEM specifications for Hyundai and Kia vehicles. The rust-resistant coating and zinc silver hat finish contribute to durability and corrosion resistance. While no specific warranty information is provided, the rotor’s design and materials support reliable, long-term braking performance when installed and maintained correctly.