PowerStop AR85121EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR85121EVC) is engineered for reliable braking performance and corrosion resistance. Designed as a vented disc brake rotor, it offers consistent heat dissipation and durability for rear brake applications on compatible vehicles.

• Part Number: AR85121EVC
• Vented disc brake rotor design for improved cooling
• Rust resistant Geomet coating to reduce corrosion
• Nominal thickness: 39.10 mm with discard thickness at 37.40 mm
• Overall height: 39.10 mm (1.54 inches)
• Outside diameter: 390.10 mm (15.40 inches)
• Mounting bolt hole circle diameter: 163.00 mm
• Stud/lug hole quantity: 10

Detailed Product Description

This Power Stop rotor is part of the Power Stop - Rear Genuine Geomet Coated Rotor line, which focuses on providing rotors with a factory-style Geomet coating. This coating enhances rust resistance, extending rotor life and maintaining braking efficiency under various environmental conditions. The vented rotor design improves heat dissipation during braking, helping to reduce brake fade and maintain consistent stopping power. With a nominal thickness of 39.10 mm and a discard thickness of 37.40 mm, this rotor meets precise specifications for rear brake systems requiring a 10-lug mounting pattern and a 163 mm bolt circle diameter.

Common Applications and Problem Solving

• Replacement for worn or warped rear disc brake rotors
• Addressing brake noise caused by rust or uneven rotor surfaces
• Improving heat dissipation to reduce brake fade on heavy-duty or frequent stop driving
• Restoring braking performance on vehicles with corroded rotors
• Compatible with vehicles requiring a 10-lug, 163 mm bolt circle diameter rear rotor

Installation Notes and Tips

Ensure the rotor thickness is within the nominal range before installation. Clean the mounting surface and hub to prevent uneven rotor seating. Use proper torque specifications for the 10 lug nuts to avoid rotor warping. It is recommended to inspect brake pads and replace them if worn to ensure optimal braking performance with the new rotor.

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet or exceed OEM specifications, including precise dimensional tolerances and coating standards. The Geomet coating provides enhanced corrosion resistance for extended rotor life. While specific warranty details are not provided here, Power Stop products typically come with a limited warranty against defects in materials and workmanship.