Dynamite Friction 631-52011L Disc Brake Rotor - Front Left

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-52011L) is engineered for reliable braking performance on select Buick, Oldsmobile, and Pontiac vehicles. Designed with a vented, directional surface, this rotor enhances heat dissipation and braking consistency under various driving conditions.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Overall diameter: 278 mm with a height of 52 mm
• Nominal thickness: 32.3 mm; discard thickness: 30.7 mm
• Bolt hole quantity: 5 with 16.2 mm diameter; bolt circle diameter: 118 mm
• Center hole diameter: 70.7 mm
• Rust resistant zinc silver hat finish with plain disc finish
• Directional brake surface for optimized performance

Product Line Details

The DFC Brake Rotor - Drilled and Slotted - Silver line by 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 consistent braking performance and durability, particularly for vehicles requiring vented rotors with directional surfaces. The silver zinc coating on the hat offers corrosion resistance, extending rotor life in various environments.

Technical Description and Specifications

This disc brake rotor features a vented design that promotes airflow to dissipate heat effectively during braking. The drilled and slotted surface helps to evacuate gases, dust, and water, improving pad contact and reducing brake fade. With a nominal thickness of 32.3 mm and a discard thickness of 30.7 mm, the rotor maintains structural integrity throughout its service life. The rotor's 5-bolt pattern with a 118 mm bolt circle diameter ensures compatibility with specific Buick, Oldsmobile, and Pontiac models. The zinc silver hat finish provides rust resistance, while the plain disc finish supports consistent braking performance.

Compatible Vehicles and Applications

• Buick models including Century, LeSabre, Regal, and Park Avenue
• Oldsmobile models such as 88, LSS, and Intrigue
• Pontiac models including Bonneville, Grand Prix, Montana, Silhouette, Trans Sport, and Grand Am
• Designed for vehicles requiring a 5-lug, 118 mm bolt circle vented rotor

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during heavy braking
• Uneven brake pad wear due to poor rotor surface design
• Corrosion and rust on rotor hats reducing rotor lifespan
• Reduced braking efficiency in wet conditions due to water accumulation
• Vibration or noise from warped or damaged rotors

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 30.7 mm before installation. Clean the rotor surface to remove any protective coatings or debris. Verify bolt hole alignment with the vehicle’s hub using the 5-lug, 118 mm bolt circle pattern. Properly torque lug nuts to manufacturer specifications to avoid rotor warping. Directional rotors must be installed with the correct rotation direction for optimal performance.

Quality Assurance and Warranty

Dynamite Friction manufactures the 631-52011L rotor to meet or exceed OEM specifications for fit, form, and function. The rust-resistant zinc silver hat finish enhances durability against corrosion. While specific warranty details are not provided, Dynamite Friction products typically undergo rigorous quality control to ensure consistent braking performance and longevity.