Perfect Stop 662339 Disc Brake Rotor - Front

Overview of Perfect Stop Gray Armor-Plate, Premium Disc Brake Rotor

The Perfect Stop Gray Armor-Plate, Premium disc brake rotor (Part Number 662339) is engineered for Toyota 4Runner and Tacoma models. Designed to meet specific fitment requirements, this vented rotor offers reliable braking performance with precise dimensions tailored for these vehicles.

• Compatible with Toyota 4Runner and Tacoma
• Vented disc brake rotor for improved heat dissipation
• Overall height: 2.776 inches (70.5 mm)
• Outside diameter: 12.539 inches (318.5 mm)
• Nominal thickness: 0.866 inches (22.0 mm)
• Discard thickness: 0.787 inches (20.0 mm)
• 6 mounting bolt holes with 5.5 inch (139.7 mm) bolt circle diameter
• Center hole diameter: 4.252 inches (108.0 mm)
• Smooth surface type for consistent pad contact
• ABS tone ring not included

About the Gray Armor-Plate, Premium Product Line

The Gray Armor-Plate, Premium line from Perfect Stop focuses on delivering durable and precisely engineered brake components. This product line emphasizes corrosion resistance and structural integrity, making it suitable for demanding driving conditions. The 662339 disc brake rotor benefits from this line’s quality standards, ensuring consistent performance for Toyota 4Runner and Tacoma vehicles.

Detailed Product Description

This disc brake rotor features a vented design that enhances heat dissipation during braking, reducing the risk of brake fade. The rotor’s nominal thickness of 0.866 inches (22.0 mm) and discard thickness of 0.787 inches (20.0 mm) provide a clear service life indicator to maintain optimal braking efficiency. With an overall height of 2.776 inches (70.5 mm) and an outside diameter of 12.539 inches (318.5 mm), it fits precisely on the specified Toyota models. The rotor includes six mounting bolt holes arranged on a 5.5 inch (139.7 mm) bolt circle diameter, and a center hole diameter of 4.252 inches (108.0 mm) ensures proper alignment. The smooth surface type promotes even pad wear and consistent braking feel.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Toyota 4Runner and Tacoma
• Improves braking performance by reducing heat buildup
• Addresses brake noise caused by uneven rotor surfaces
• Restores proper rotor thickness to maintain safe braking distances
• Prevents brake fade during heavy or prolonged braking

Installation Notes and Tips

Ensure the rotor is installed on compatible Toyota 4Runner or Tacoma models matching the specified bolt pattern and dimensions. Verify rotor thickness before installation to confirm it is above the discard thickness of 0.787 inches (20.0 mm). Clean the rotor surface and hub mounting area to remove rust or debris for proper fitment. Use appropriate torque specifications for the six mounting bolts to avoid rotor warping. Note that this rotor does not include an ABS tone ring, so confirm compatibility with your vehicle’s ABS system.

Quality Assurance and Warranty

Perfect Stop’s Gray Armor-Plate, Premium disc brake rotors are manufactured to meet industry standards for durability and performance. While specific warranty details are not provided, the product line is designed to offer reliable service life when installed and maintained according to manufacturer guidelines.