Dynamite Friction 631-76021L Disc Brake Rotor - Front Left

Overview of DFC Brake Rotor - Drilled and Slotted - Silver

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-76021L) is engineered for reliable braking performance on select Chevrolet and Toyota vehicles. Designed with a vented, directional surface, this rotor enhances heat dissipation and braking consistency for models like the Toyota Corolla, MR2, and Chevrolet Nova.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 18 mm with a discard thickness of 17 mm
• Overall diameter: 243 mm; height: 47 mm
• Rust-resistant zinc silver hat finish with plain disc finish
• Directional braking surface optimized for performance
• Bolt hole quantity: 4 with a 100 mm bolt circle diameter
• Center hole diameter: 54 mm; stud/lug hole diameter: 14.5 mm

Product Line Details

The DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction focuses on rotors that combine drilled holes and slots to improve brake pad bite and reduce heat buildup. This product line is designed to provide enhanced braking control and durability, particularly for vehicles requiring vented rotors with directional surfaces. The zinc silver hat finish adds corrosion resistance, extending rotor life under typical driving conditions.

Technical Description and Features

This disc brake rotor features a vented design that promotes airflow to dissipate heat generated during braking, reducing the risk of brake fade. The drilled and slotted surface pattern helps evacuate gases, dust, and water from the braking surface, improving pad contact and braking efficiency. The rotor’s nominal thickness of 18 mm ensures structural integrity, while the discard thickness of 17 mm indicates the minimum safe thickness before replacement is necessary. The zinc silver coating on the hat provides rust resistance, maintaining the rotor’s appearance and function over time. With a 4-bolt hole configuration and a 100 mm bolt circle diameter, this rotor is compatible with specific Chevrolet and Toyota models, including the Corolla, MR2, and Nova.

Compatible Vehicles and Applications

• Replacement rotor for Chevrolet Nova models requiring a 243 mm diameter vented rotor
• Suitable for Toyota Corolla and MR2 vehicles needing a drilled and slotted disc brake rotor
• Ideal for addressing brake fade and improving heat dissipation in vented rotor applications
• Helps reduce brake noise and vibration associated with worn or damaged rotors
• Supports consistent braking performance under varied driving conditions

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it meets or exceeds the discard thickness of 17 mm. Clean the rotor surface to remove any protective coatings or residues before mounting. Verify bolt hole alignment with the vehicle’s hub using the 4-bolt, 100 mm bolt circle pattern. Proper torque specifications should be followed to avoid rotor warping. Directional rotors must be installed with the correct rotation direction to maintain optimal performance.

Quality Assurance

Dynamite Friction manufactures the 631-76021L rotor to meet industry standards for durability and performance. The rust-resistant zinc silver finish helps extend service life by protecting against corrosion. While specific warranty details are not provided, this rotor is designed to maintain consistent braking performance when installed and maintained according to manufacturer guidelines.