PowerStop AR8649XPR Disc Brake Rotor Set - Front

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

The Power Stop - Front Drilled, Slotted and Zinc Plated Brake Rotor Pair (Part Number AR8649XPR) is engineered for reliable braking performance on select Buick, Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. Designed specifically for models like the Ascender, Bravada, Envoy, Rainier, and Trailblazer, this rotor set offers enhanced heat dissipation and corrosion resistance.

• Front drilled and slotted surface for improved heat and gas dissipation
• Zinc plated coating to resist rust and corrosion
• Vented rotor design for better cooling during braking
• Nominal thickness ranging from 27.50 mm to 29.00 mm
• Outside diameter of 305 mm (12.00 inches) for precise fitment
• Mounting bolt hole circle diameter of 127 mm with 6 lug holes
• Discard thickness specified at 27.50 mm to ensure safety and performance

Detailed Product Description

This Power Stop disc brake rotor set features a vented design that helps maintain optimal operating temperatures by allowing air to flow through the rotor. The front drilled and slotted surface improves braking efficiency by reducing heat buildup and expelling brake dust and gases. The zinc plating provides a protective layer against rust, extending the rotor's service life, especially in environments prone to moisture and road salt.

With an outside diameter of 305 mm and a mounting bolt hole circle diameter of 127 mm, this rotor pair is engineered to fit vehicles such as the Chevrolet Trailblazer and GMC Envoy. The nominal thickness ranges between 27.50 mm and 29.00 mm, with a discard thickness of 27.50 mm, ensuring the rotors meet safety standards throughout their lifespan.

Power Stop Brand Line Information

The Power Stop - Front Drilled, Slotted and Zinc Plated Brake Rotor Pair line focuses on delivering rotors that combine performance features like drilled and slotted surfaces with corrosion-resistant zinc plating. This product line is designed to provide consistent braking performance and durability for front disc brake applications on compatible vehicles.

Common Applications and Issues Addressed

• Replacement for worn or warped front brake rotors on Buick Ascender and Chevrolet Trailblazer
• Improves braking response and reduces brake fade under heavy use
• Addresses rotor corrosion and rust buildup in humid or salted road conditions
• Helps eliminate brake noise caused by uneven rotor surfaces
• Restores proper rotor thickness for safe braking performance

Installation Notes and Tips

• Ensure rotor discard thickness of 27.50 mm is not exceeded before replacement
• Clean hub surface before installation to prevent rotor runout
• Torque lug nuts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to maintain optimal braking
• Follow vehicle-specific service manual for proper installation procedures

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The zinc plating provides added protection against corrosion, contributing to longer rotor life. 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 product packaging or manufacturer website for complete warranty information.