Dynamite Friction 631-47009R Disc Brake Rotor - Front Right

Overview of Dynamite Friction DFC Brake Rotor

The Dynamite Friction DFC Brake Rotor - Drilled and Slotted - Silver (part number 631-47009R) is engineered for reliable braking performance on select Buick, Chevrolet, Oldsmobile, and Pontiac models. Designed with a vented, directional surface, this rotor enhances heat dissipation and braking consistency under demanding conditions.

• Disc type: Vented disc brake rotor with drilled and slotted surface
• Nominal thickness: 26.3 mm; discard thickness: 24.5 mm
• Overall height: 118 mm; outside diameter: 280 mm
• Bolt hole quantity: 5 with 7/16-20 diameter; bolt circle diameter: 120.7 mm
• Center hole diameter: 70.5 mm; zinc silver hat finish with rust-resistant coating
• Directional brake surface for optimized performance

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 aid in gas and debris evacuation. The silver zinc coating on the hat area provides corrosion resistance, extending rotor life. This product line is tailored for drivers seeking rotors that maintain consistent braking performance while managing heat effectively.

Technical Description and Fitment

This disc brake rotor features a vented design that promotes airflow to reduce heat buildup during braking. The drilled and slotted surface enhances pad cleaning and gas release, which helps maintain stable friction levels. With a nominal thickness of 26.3 mm and a discard thickness of 24.5 mm, the rotor meets precise wear specifications. The rotor’s 5-bolt pattern with a 7/16-20 bolt hole diameter and 120.7 mm bolt circle diameter ensures compatibility with various models including Buick LeSabre, Chevrolet Camaro, Oldsmobile Delta 88, and Pontiac Firebird. The zinc silver hat finish and rust-resistant coating protect against corrosion, making it suitable for long-term use in diverse driving conditions.

Applications and Problem Solving

• Replacement for worn or warped rotors on Buick, Chevrolet, Oldsmobile, and Pontiac vehicles
• Improves braking response and reduces brake fade under heavy use
• Helps prevent rotor cracking and uneven wear through enhanced heat dissipation
• Addresses brake noise and vibration issues caused by surface glazing or pad deposits
• Maintains consistent braking performance in wet or dusty environments

Installation Notes and Tips

Ensure the rotor surface is clean and free of oil or debris before installation. Verify the bolt pattern and dimensions match your vehicle’s specifications. It is recommended to replace brake pads simultaneously to optimize braking performance. Proper torque specifications should be followed when securing the rotor to avoid warping. Directional rotors must be installed with the correct rotation direction as indicated on the rotor surface.

Quality Assurance

Dynamite Friction rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The rust-resistant coating and zinc silver hat finish contribute to durability and corrosion resistance. While specific warranty details are not provided, Dynamite Friction products are subject to quality control processes to ensure reliable performance on compatible Buick, Chevrolet, Oldsmobile, and Pontiac models.