PowerStop AR8645XPR 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 AR8645XPR) is engineered for reliable braking performance on select GM trucks and SUVs. Designed specifically for rear axle applications, this rotor set offers enhanced heat dissipation and corrosion resistance to maintain consistent stopping power.

• Compatible with Cadillac, Chevrolet, and GMC models including Escalade, Silverado 1500, Tahoe, Yukon XL 1500, and more
• Vented disc brake rotors with drilled and slotted surface for improved heat management
• Zinc plated finish provides rust resistance and extended rotor life
• Nominal thickness ranges from 28.50 mm to 30.10 mm ensuring durability
• Overall diameter of 330 mm (13 inches) with 6 lug holes and 139.7 mm bolt circle diameter

Detailed Product Features and Specifications

This Power Stop rotor pair features a vented design that promotes airflow to reduce brake fade during heavy use. The drilled and slotted surface pattern helps evacuate gases, dust, and water, improving brake pad contact and performance. The zinc plating offers a protective coating against rust and corrosion, which is especially beneficial for vehicles exposed to harsh weather conditions.

Each rotor has a nominal thickness between 28.50 mm and 30.10 mm, with a discard thickness of 28.50 mm, ensuring the rotors maintain structural integrity over time. The overall height measures approximately 95.60 mm, and the outside diameter is 330 mm (13 inches), matching factory specifications for a precise fit. The mounting bolt hole circle diameter is 139.7 mm with 6 lug holes sized at 5.50 mm, compatible with the specified GM models.

About the Power Stop - Rear Drilled, Slotted and Zinc Plated Brake Rotor Pair Line

The Power Stop - Rear Drilled, Slotted and Zinc Plated Brake Rotor Pair line focuses on delivering rotors that combine performance and durability. This product line is designed to meet or exceed OEM standards by incorporating vented rotors with drilled and slotted surfaces for enhanced braking efficiency. The zinc plating adds a layer of corrosion resistance, making these rotors suitable for rear brake applications on trucks and SUVs that require reliable stopping power under demanding conditions.

Common Applications and Problem Solving

• Replacement for worn or warped rear brake rotors on Cadillac Escalade and Chevrolet Silverado 1500
• Improves braking performance in wet or dusty conditions by reducing brake fade
• Addresses rotor corrosion issues caused by road salt and moisture exposure
• Helps eliminate brake noise and vibration associated with uneven rotor surfaces
• Restores proper rotor thickness to maintain safe braking distances

Installation Notes and Tips

• Ensure compatibility with your vehicle’s make and model before installation
• Inspect brake pads and replace if worn to optimize rotor performance
• Clean mounting surfaces to prevent rotor misalignment and vibration
• Torque lug nuts to manufacturer specifications for safety and rotor longevity
• Perform a bed-in procedure after installation to maximize braking efficiency

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. The zinc plating provides additional protection against rust, extending the service life of the rotors. While specific warranty details are not provided here, Power Stop products typically come with a limited warranty covering defects in materials and workmanship. Refer to the manufacturer’s documentation for complete warranty information.