Perfect Stop 661123 Disc Brake Rotor - Rear

Overview of Perfect Stop Gray Armor-Plate Premium Rotor

The Perfect Stop Gray Armor-Plate, Premium disc brake rotor (part number 661123) is engineered for reliable braking performance on select Saab and Subaru vehicles. Designed as a solid rotor with a smooth surface, it meets precise specifications to ensure consistent stopping power and durability.

• Compatible with Saab 9-2X and Subaru Forester, Impreza, Legacy models
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 10.472 inches (266.0 mm)
• Nominal thickness: 0.394 inches (10.0 mm); discard thickness: 0.335 inches (8.5 mm)
• Overall height: 2.63 inches (66.8 mm)
• Mounting bolt hole quantity: 5 with 100.0 mm (3.937 inches) bolt circle diameter
• Center hole diameter: 2.283 inches (58.0 mm)
• ABS tone ring not included

Product Line Details: Gray Armor-Plate, Premium

The Gray Armor-Plate, Premium line from Perfect Stop focuses on delivering rotors with enhanced surface protection and consistent thickness for improved wear resistance. This product line emphasizes durability and precise fitment, making it suitable for vehicles requiring reliable braking components without additional features like venting or ABS tone rings. The 661123 rotor exemplifies these qualities with its solid construction and smooth surface.

Technical Specifications and Features

This disc brake rotor features a solid design, which provides uniform heat dissipation and structural integrity. The nominal thickness of 0.394 inches (10.0 mm) ensures adequate material for longevity, while the discard thickness of 0.335 inches (8.5 mm) indicates the minimum safe thickness before replacement is necessary. The rotor’s outside diameter of 10.472 inches (266.0 mm) and overall height of 2.63 inches (66.8 mm) are engineered to match the braking system requirements of Saab 9-2X and Subaru Forester, Impreza, and Legacy models. The 5-bolt mounting pattern with a 100.0 mm (3.937 inches) bolt circle diameter and a center hole diameter of 2.283 inches (58.0 mm) ensures proper alignment and fitment.

Applications and Problem Solving

• Replacement for worn or warped rotors on Saab 9-2X and Subaru Forester, Impreza, Legacy
• Addresses brake pulsation caused by uneven rotor surfaces
• Restores braking efficiency when rotor thickness falls below discard limits
• Eliminates noise and vibration related to rotor surface imperfections
• Suitable for vehicles without ABS tone ring requirements

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness with a micrometer to confirm it meets nominal specifications. Use the correct torque specifications for the 5 mounting bolts to avoid rotor warping. This rotor does not include an ABS tone ring, so it is intended for vehicles that do not require this feature. Always inspect related brake components such as pads and calipers during installation.

Quality Assurance

Perfect Stop rotors are manufactured to meet OEM standards for fit and function. The Gray Armor-Plate, Premium rotors undergo quality control processes to ensure consistent thickness and surface finish. While specific warranty details are not provided, these rotors are designed to maintain performance within the specified discard thickness limits for safe operation.