Perfect Stop 6620230 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Chevrolet and GMC Trucks

The Perfect Stop Gray Armor-Plate, Premium disc brake rotor (Part Number 6620230) is engineered for heavy-duty Chevrolet and GMC trucks. Designed to meet the demands of models like the Sierra 1500 HD, Sierra 2500 HD, Silverado 1500 HD, Silverado 2500 HD, Suburban 2500, and Yukon XL 2500, this rotor ensures consistent braking performance under tough conditions.

• Outside diameter: 12.992 inches (330.0 mm)
• Nominal thickness: 1.142 inches (29.0 mm)
• Discard thickness: 1.043 inches (26.5 mm)
• Overall height: 3.37 inches (85.6 mm)
• Vented rotor design for improved heat dissipation
• 8 mounting bolt holes with a 6.5-inch (165.1 mm) bolt circle diameter
• Center hole diameter: 4.614 inches (117.2 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 durability and performance for demanding brake applications. This product line features rotors with enhanced surface treatments and vented designs to manage heat effectively, reducing the risk of warping and extending rotor life. The 6620230 rotor benefits from these design principles, making it suitable for heavy-duty Chevrolet and GMC trucks requiring reliable braking under load.

Technical Details and Specifications

This disc brake rotor features a vented design that improves airflow and heat dissipation during braking, which helps maintain consistent stopping power and reduces brake fade. The rotor’s nominal thickness of 1.142 inches (29.0 mm) provides a solid braking surface, while the discard thickness of 1.043 inches (26.5 mm) indicates when replacement is necessary to maintain safety. The 8-bolt mounting pattern with a 6.5-inch bolt circle diameter ensures secure fitment on compatible vehicles. The smooth surface type promotes even brake pad wear and quiet operation.

Compatible Vehicles and Applications

• Chevrolet Sierra 1500 HD and 2500 HD
• Chevrolet Silverado 1500 HD and 2500 HD
• Chevrolet Suburban 2500
• GMC Sierra 1500 HD and 2500 HD
• GMC Yukon XL 2500

This rotor is designed specifically for these heavy-duty truck models, providing reliable braking performance for towing, hauling, and daily driving.

Common Issues Addressed by This Rotor

• Brake rotor warping due to heat buildup
• Reduced braking efficiency from worn or thin rotors
• Uneven brake pad wear caused by rotor surface imperfections
• Brake noise and vibration from damaged rotors
• Maintaining proper rotor thickness for safe braking

Installation Notes and Tips

Ensure the rotor mounting surface is clean and free of rust or debris before installation. Verify the rotor thickness is above the discard thickness of 1.043 inches (26.5 mm) to maintain safety standards. Use the correct torque specifications for the 8 mounting bolts to avoid rotor distortion. This rotor does not include an ABS tone ring, so confirm compatibility with your vehicle’s ABS system.

Quality Assurance and Warranty

Perfect Stop manufactures the Gray Armor-Plate, Premium rotors to meet or exceed OEM specifications for fit, form, and function. While specific warranty details are not provided, Perfect Stop products typically undergo rigorous quality control to ensure durability and performance for heavy-duty applications.