Dynamite Friction 631-48039L 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 631-48039L) is engineered for reliable braking performance on heavy-duty vehicles. Designed specifically for Chevrolet, GMC, and Hummer models, this rotor offers enhanced heat dissipation and consistent stopping power.

• Part Number: 631-48039L
• Disc Type: Vented, drilled and slotted surface
• Nominal Thickness: 29 mm with a discard thickness of 26.5 mm
• Overall Diameter: 330 mm
• Hat Finish: Zinc silver coating for corrosion resistance
• Bolt Hole Quantity: 8 with 16.5 mm diameter
• Directional brake surface for optimized performance
• Rust resistant coating included

Detailed Product Features and Specifications

This DFC Brake Rotor features a vented design that improves airflow to reduce heat buildup during braking, which helps maintain consistent brake performance and reduces the risk of warping. The drilled and slotted surface enhances water and debris evacuation, improving wet-weather braking and reducing brake fade. The rotor’s nominal thickness is 29 mm, with a discard thickness of 26.5 mm, ensuring a long service life before replacement is necessary.

The rotor’s hat is finished with a zinc silver coating to resist rust and corrosion, extending the rotor’s durability in harsh environments. With an outside diameter of 330 mm and an overall height of 85.7 mm, this rotor is engineered to fit specific heavy-duty Chevrolet, GMC, and Hummer models. The bolt pattern includes 8 holes with a 16.5 mm diameter and a bolt circle diameter of 165.1 mm, matching factory specifications for secure installation.

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

The DFC Brake Rotor - Drilled and Slotted - Silver line from Dynamite Friction is designed to provide enhanced braking performance through advanced rotor surface technology. The combination of drilled holes and slots improves heat dissipation and debris removal, which is critical for heavy-duty applications. The silver zinc coating on the hat offers additional protection against corrosion, making this rotor suitable for vehicles operating in demanding conditions.

Compatible Vehicles and Applications

• Chevrolet Avalanche 2500
• Chevrolet Express 2500 and 3500
• Chevrolet Silverado 1500, 1500 HD, 1500 HD Classic, 2500
• Chevrolet Suburban 2500
• GMC Sierra 1500 HD, 1500 HD Classic, 2500, 2500 HD
• GMC Savana 2500 and 3500
• Hummer H2
• GMC Yukon XL 2500

Common Issues Addressed by This Brake Rotor

• Brake fade caused by excessive heat buildup
• Reduced braking efficiency in wet or debris-filled conditions
• Corrosion and rust on rotor surfaces
• Warping or uneven rotor wear
• Incompatibility with factory bolt patterns and dimensions

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 26.5 mm before installation. Clean the hub surface thoroughly to prevent uneven mounting. Use the correct torque specifications for the 8 bolt holes with 16.5 mm diameter to secure the rotor. The directional drilled and slotted surface requires installation in the correct rotation direction for optimal performance. Always inspect brake pads and hardware during rotor replacement.

Quality Assurance and Warranty

Dynamite Friction manufactures the DFC Brake Rotor - Drilled and Slotted - Silver to meet or exceed OEM specifications for fit, form, and function. The rust-resistant zinc silver coating adds durability in corrosive environments. While specific warranty details are not provided here, Dynamite Friction products typically come with a limited warranty against manufacturing defects. Consult product documentation or the manufacturer for exact warranty terms.