PowerStop JBR1789EVC Disc Brake Rotor - Front

Power Stop Front Genuine Geomet Coated Rotor Overview

The Power Stop - Front Genuine Geomet Coated Rotor (Part Number JBR1789EVC) is engineered for reliable braking performance on Subaru Ascent models. Designed with a rust-resistant Geomet coating and vented rotor construction, this disc brake rotor offers durability and efficient heat dissipation for consistent stopping power.

• Compatible with Subaru Ascent front brake system
• Vented disc brake rotor design for improved cooling
• Rust resistant Geomet coating to prevent corrosion
• Nominal thickness of 1.18 inches (30.00 mm) with discard thickness at 1.10 inches (28.00 mm)
• Overall height of 1.80 inches (46.30 mm) and outside diameter of 13.10 inches (333.50 mm)
• Mounting bolt hole circle diameter of 4.50 inches (114.30 mm) with 5 lug holes

Detailed Product Description

This Power Stop rotor is part of the Front Genuine Geomet Coated Rotor line, which focuses on providing rotors with a factory-style Geomet coating. This coating enhances corrosion resistance, extending rotor life and maintaining a clean surface appearance. The vented rotor design improves heat dissipation during braking, reducing the risk of brake fade under normal driving conditions. With precise dimensions including a nominal thickness of 1.18 inches and a discard thickness of 1.10 inches, this rotor meets strict OEM specifications for the Subaru Ascent. The 5-lug hole pattern and 4.50-inch bolt circle diameter ensure proper fitment and secure mounting.

Applications and Problem Solving

• Replacement for worn or warped front disc brake rotors on Subaru Ascent
• Addresses brake noise and vibration caused by uneven rotor surfaces
• Helps prevent rust and corrosion-related rotor degradation
• Improves braking consistency by maintaining proper rotor thickness
• Reduces heat buildup during braking to minimize fade

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is within the nominal range and above the discard thickness of 1.10 inches. Use proper torque specifications for the 5 lug nuts on the 4.50-inch bolt circle diameter. It is recommended to inspect brake pads and hardware during rotor replacement to maintain optimal braking performance.

Quality Assurance

Power Stop rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The Geomet coating provides enhanced corrosion resistance, contributing to longer rotor life. While specific warranty details are not provided, Power Stop products are known for consistent quality and reliability in automotive braking applications.