PowerStop JBR1790 Disc Brake Rotor - Rear

Power Stop Rear OE Stock Replacement Brake Rotor Overview

The Power Stop - Rear OE Stock Replacement Brake Rotor (Part Number JBR1790) is engineered for Subaru Ascent models requiring reliable rear disc brake performance. Designed to meet original equipment specifications, this vented rotor ensures consistent braking under normal driving conditions.

• Compatible with Subaru Ascent rear disc brake systems
• Vented rotor design for improved heat dissipation
• Nominal thickness of 0.67 inches (17.00 mm) for durability
• Discard thickness at 0.59 inches (15.00 mm) to indicate replacement threshold
• Overall height of 1.90 inches (47.10 mm) for precise fitment
• Outside diameter of 13.00 inches (331.00 mm) matching OE specifications
• Five stud/lug hole configuration with 4.50 inch (114.30 mm) bolt circle diameter
• No rust resistant coating applied

Product Line Details: Power Stop - Rear OE Stock Replacement Brake Rotor

This rotor is part of the Power Stop - Rear OE Stock Replacement Brake Rotor line, which focuses on providing direct OE replacement parts for rear brake systems. These rotors are manufactured to match the original equipment dimensions and performance characteristics, ensuring compatibility and reliable braking for vehicles like the Subaru Ascent. The line emphasizes maintaining factory specifications without additional coatings or modifications.

Technical Description and Specifications

The JBR1790 rotor features a vented design that helps dissipate heat generated during braking, reducing the risk of brake fade. With a nominal thickness of 0.67 inches (17.00 mm), it offers sufficient material for longevity, while the discard thickness of 0.59 inches (15.00 mm) provides a clear limit for rotor replacement to maintain safety. The rotor’s overall height of 1.90 inches (47.10 mm) and outside diameter of 13.00 inches (331.00 mm) ensure proper alignment and fitment on the Subaru Ascent’s rear axle. The five lug holes arranged on a 4.50 inch (114.30 mm) bolt circle diameter match the vehicle’s hub specifications. This rotor does not include a rust resistant coating, so regular inspection for corrosion is recommended in harsh environments.

Common Applications and Problem Solving

• Replacement for worn or warped rear brake rotors on Subaru Ascent
• Addresses brake pulsation or vibration issues caused by uneven rotor surfaces
• Restores braking performance diminished by rotor thickness below discard limits
• Suitable for vehicles experiencing excessive brake noise due to rotor wear
• Helps maintain proper brake pad contact and stopping power

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is above the discard thickness of 0.59 inches (15.00 mm) to guarantee safe operation. Use proper torque specifications for the five lug nuts on the 4.50 inch (114.30 mm) bolt circle diameter hub. Since this rotor does not have a rust resistant coating, consider applying an anti-corrosion treatment to the rotor hat and mounting surfaces if exposed to moisture or road salt.

Quality Assurance and Warranty

Power Stop manufactures the JBR1790 rotor to meet or exceed original equipment standards for fit, form, and function. While no specific warranty information is provided, Power Stop products typically undergo rigorous quality control to ensure durability and performance. Users should consult vehicle service manuals and follow recommended maintenance schedules for optimal brake system reliability.