PowerStop AR8643XPR Disc Brake Rotor Set - Rear

Power Stop Rear Drilled, Slotted and Zinc Plated Brake Rotor Pair Overview

The Power Stop - Rear Drilled, Slotted and Zinc Plated Brake Rotor Pair (Part Number AR8643XPR) is engineered for reliable braking performance on select Chevrolet, GMC, and Hummer models. Designed with vented construction and a rust-resistant zinc plating, this rotor set offers enhanced heat dissipation and corrosion protection for rear brake applications.

• Compatible with Chevrolet Express 2500, Express 3500, Silverado 1500, Silverado 1500 HD, Silverado 2500, Suburban 2500, Yukon XL 2500
• Also fits GMC Sierra 1500, Sierra 1500 HD, Sierra 2500, Savana 2500, Savana 3500, and Hummer H2
• Vented disc brake rotors with drilled and slotted surface for improved heat management
• Zinc plated coating to resist rust and corrosion
• Nominal thickness ranges from 26.50 mm to 29.20 mm with discard thickness at 26.50 mm
• Overall height options of 3.40 inches and 85.90 mm
• Outside diameter of 13.00 inches (330 mm) with 8 lug holes and 6.50 inch bolt circle diameter

Product Line Details: Power Stop Rear Drilled, Slotted and Zinc Plated Rotors

The Power Stop - Rear Drilled, Slotted and Zinc Plated Brake Rotor Pair is part of a product line designed to enhance braking efficiency through advanced rotor surface technology. The drilled and slotted design helps to reduce brake fade by improving heat dissipation and gas venting during braking. Zinc plating provides a protective layer against rust, extending rotor life especially in environments prone to moisture and corrosion. This product line targets rear brake applications on heavy-duty trucks and SUVs, including Chevrolet, GMC, and Hummer models.

Technical Specifications and Features

This disc brake rotor set features a vented rotor design that promotes airflow to maintain optimal operating temperatures. The drilled and slotted surface pattern aids in removing brake dust and gases, which can otherwise reduce braking efficiency. The zinc plating coating offers rust resistance, helping maintain rotor integrity over time. The rotors have a nominal thickness between 26.50 mm and 29.20 mm, with a discard thickness of 26.50 mm, ensuring safe replacement intervals. The outside diameter measures 13.00 inches (330 mm), and the rotors mount with an 8-lug configuration on a 6.50 inch bolt circle diameter, compatible with specified Chevrolet, GMC, and Hummer models.

Common Applications and Problem Solving

• Replacement for worn or warped rear brake rotors on Chevrolet Express 2500 and 3500
• Upgrading rear brake rotors on GMC Sierra 1500 HD and Sierra 2500 for improved heat dissipation
• Addressing brake fade issues on Hummer H2 during heavy towing or off-road use
• Corrosion resistance for vehicles operating in humid or salted road environments
• Restoring braking performance on Chevrolet Silverado 1500 HD Classic and Suburban 2500

Installation Notes and Tips

• Ensure compatibility with vehicle make and model before installation
• Inspect brake pads and replace if worn to maintain optimal rotor performance
• Clean mounting surfaces to prevent rotor runout and vibration
• Torque lug nuts to manufacturer specifications for safety and rotor longevity
• Perform a bed-in procedure after installation to optimize braking surface contact

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The zinc plating provides additional corrosion resistance to extend rotor life. While specific warranty details are not provided, Power Stop products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or manufacturer resources for complete warranty information.