Perfect Stop 661127 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 661127) is engineered for reliable braking performance on select Nissan and INFINITI vehicles. Designed specifically for models like the Nissan Altima, Sentra, and INFINITI G20, this rotor meets precise specifications to ensure proper fit and function.

• Compatible with Nissan Altima, Sentra, and INFINITI G20
• Part Number: 661127
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 10.138 inches (257.5 mm)
• Nominal thickness: 0.354 inches (9.0 mm)
• Discard thickness: 0.315 inches (8.0 mm)
• Overall height: 1.752 inches (44.5 mm)
• Mounting bolt hole quantity: 4 with 4.5 inch (114.3 mm) bolt circle diameter
• Center hole diameter: 2.681 inches (68.1 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 durable, solid rotors with a smooth surface designed for consistent braking performance. This product line emphasizes precise manufacturing tolerances and corrosion-resistant coatings to extend rotor life and maintain braking efficiency. The 661127 rotor exemplifies these qualities, providing a reliable replacement option for compatible Nissan and INFINITI vehicles.

Technical Specifications and Features

This disc brake rotor is a solid type, meaning it does not have ventilation channels, which suits certain vehicle brake system designs. The smooth surface finish supports even pad wear and consistent braking response. With a nominal thickness of 0.354 inches (9.0 mm) and a discard thickness of 0.315 inches (8.0 mm), this rotor meets OEM thickness standards to ensure safe operation and longevity. The overall height of 1.752 inches (44.5 mm) and the precise mounting bolt pattern (4 holes on a 4.5 inch or 114.3 mm circle) guarantee proper fitment on the specified Nissan Altima, Sentra, and INFINITI G20 models.

Applications and Problem Solving

• Replacement for worn or warped rotors on Nissan Altima, Sentra, and INFINITI G20
• Addresses brake pulsation caused by uneven rotor surfaces
• Restores braking performance diminished by rotor thickness below discard limits
• Eliminates noise and vibration from damaged or corroded rotors
• Ensures proper rotor fitment and alignment with correct bolt hole pattern and center bore

Installation Notes and Tips

When installing the Perfect Stop 661127 rotor, verify that the mounting surface is clean and free of rust or debris to ensure proper seating. Confirm the rotor thickness is within nominal specifications before installation. Since this rotor does not include an ABS tone ring, ensure compatibility with your vehicle’s ABS system. Use proper torque specifications on mounting bolts to avoid rotor warping. It is recommended to replace brake pads simultaneously to maintain optimal braking performance.

Quality Assurance

Perfect Stop rotors undergo strict quality control to meet industry standards for durability and performance. The Gray Armor-Plate, Premium rotors are manufactured with corrosion-resistant coatings to extend service life. While specific warranty details are not provided, Perfect Stop products are designed to meet or exceed OEM specifications for reliable braking on Nissan Altima, Sentra, and INFINITI G20 vehicles.