Perfect Stop 6621320 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 6621320) is engineered for Ford Mustang models requiring reliable braking performance. This vented rotor features a smooth surface and precise dimensions to maintain optimal stopping power and heat dissipation.

• Compatible with Ford Mustang vehicles
• Vented disc brake rotor design for improved cooling
• Overall diameter of 13.228 inches (336.0 mm)
• Nominal thickness of 1.181 inches (30.0 mm) with discard thickness at 1.118 inches (28.4 mm)
• Five mounting bolt holes with a 4.5 inch (114.3 mm) bolt circle diameter
• Center hole diameter of 2.795 inches (71.0 mm)
• Surface type: smooth
• ABS tone ring not included

Product Line Details: Gray Armor-Plate, Premium

The Gray Armor-Plate, Premium line by Perfect Stop focuses on delivering durable and consistent braking components. This product line emphasizes corrosion resistance and structural integrity, making it suitable for performance-oriented vehicles like the Ford Mustang. The premium coating helps protect the rotor surface while maintaining smooth braking contact.

Technical Specifications and Features

This disc brake rotor is vented to enhance heat dissipation during braking, reducing the risk of brake fade under demanding conditions. The rotor’s nominal thickness of 1.181 inches (30.0 mm) ensures a robust braking surface, while the discard thickness of 1.118 inches (28.4 mm) indicates the minimum safe thickness before replacement is necessary. The overall height measures 1.89 inches (48.0 mm), and the rotor includes five mounting bolt holes arranged on a 4.5 inch (114.3 mm) bolt circle diameter, compatible with Ford Mustang brake assemblies. The smooth surface type supports consistent pad contact and braking performance.

Applications and Problem Solving

• Replacement for worn or warped rotors on Ford Mustang models
• Addresses brake noise and vibration caused by uneven rotor surfaces
• Improves heat management to reduce brake fade during aggressive driving
• Restores braking efficiency for vehicles with rotor thickness below discard limits
• Suitable for Mustangs requiring vented rotors with specific bolt pattern and dimensions

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the mounting bolt hole pattern and center hole diameter match the vehicle specifications. Since this rotor does not include an ABS tone ring, confirm compatibility with the vehicle’s ABS system. Use proper torque specifications for mounting bolts to avoid rotor warping. It is recommended to replace brake pads simultaneously to ensure optimal braking performance.

Quality Assurance

Perfect Stop disc brake rotors undergo rigorous quality control to meet OEM standards. The Gray Armor-Plate, Premium line features corrosion-resistant coatings to extend rotor life. While specific warranty details are not provided, Perfect Stop products are manufactured to deliver consistent performance and durability for Ford Mustang brake systems.