PowerStop AR8681EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number AR8681EVC) is engineered for reliable braking performance on select Cadillac and Chevrolet vehicles. Designed specifically for rear disc brake applications, this rotor offers corrosion resistance and precise fitment for models like the Camaro and CTS.

• Compatible with Cadillac CTS and Chevrolet Camaro rear brake systems
• Vented disc brake rotor design for improved heat dissipation
• Rust resistant Geomet coating to extend rotor life
• Nominal thickness of 28.20 mm with a discard thickness of 26.00 mm
• Outside diameter of 365.00 mm (14.40 inches) for exact fit
• Mounting bolt hole circle diameter of 120.00 mm with 5 lug holes
• Overall height of 47.40 mm (1.90 inches) ensuring proper clearance

Detailed Product Description

This Power Stop rear rotor features a vented design that helps maintain optimal braking temperatures by allowing air to flow between the rotor surfaces. The Geomet coating provides a protective layer against rust and corrosion, which is especially beneficial for vehicles exposed to moisture and road salt. With a nominal thickness of 28.20 mm and a discard thickness of 26.00 mm, this rotor meets strict specifications to ensure safe and consistent braking performance. The 5-lug hole pattern with a 120.00 mm bolt circle diameter matches the factory mounting points on compatible Cadillac and Chevrolet models, including the Camaro and CTS.

Power Stop - Rear Genuine Geomet Coated Rotor Product Line

The Power Stop - Rear Genuine Geomet Coated Rotor line focuses on delivering rotors with factory-level fitment and corrosion resistance. The Geomet coating used in this product line is a zinc-based finish that provides enhanced rust protection without compromising braking efficiency. This product line is designed to meet or exceed OEM standards, making it a suitable replacement for rear rotors on select GM vehicles.

Common Applications and Issues Addressed

• Replacement for worn or warped rear rotors on Cadillac CTS and Chevrolet Camaro
• Prevents rust buildup that can cause brake noise and uneven pad wear
• Improves heat dissipation to reduce brake fade during heavy use
• Restores proper rotor thickness for consistent braking response
• Ensures correct fitment to avoid installation issues and vibration

Installation Notes and Tips

• Verify rotor thickness before installation; discard if below 26.00 mm
• Clean mounting surface to ensure proper rotor seating
• Torque lug nuts to manufacturer specifications to prevent rotor warping
• Inspect brake pads and replace if worn to maintain optimal braking
• Check for any signs of uneven wear or damage on calipers and hardware

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet OEM specifications and undergo quality control inspections to ensure durability and performance. The Geomet coating enhances corrosion resistance, contributing to longer rotor life. Warranty coverage details should be confirmed with the distributor or manufacturer, as it may vary by region.