PowerStop JBR1148EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number JBR1148EVC) is engineered for reliable braking performance on select Lexus models. Designed with a rust-resistant Geomet coating and vented rotor construction, this disc brake rotor supports consistent heat dissipation and durability.

• Compatible with Lexus GS300, GS350, GS430, GS450h, GS460, IS250, and IS350
• Vented disc brake rotor for improved cooling
• Rust resistant Geomet coating for extended rotor life
• Outside diameter of 310.00 mm (12.20 inches)
• Nominal thickness of 17.80 mm (0.70 inches) with discard thickness at 16.50 mm
• Overall height of 67.50 mm (2.70 inches)
• Mounting bolt hole circle diameter of 114.30 mm (4.50 inches) with 5 lug holes

Product Line Details: Power Stop - Rear Genuine Geomet Coated Rotor

This rotor is part of the Power Stop - Rear Genuine Geomet Coated Rotor line, which focuses on providing rotors with a factory-style Geomet coating. This coating offers enhanced corrosion resistance compared to standard rotors, helping maintain rotor integrity and appearance over time. The vented design improves heat dissipation, reducing the risk of brake fade during extended use. This product line is tailored for rear axle applications on specific Lexus vehicles, ensuring proper fit and function.

Technical Specifications and Features

The JBR1148EVC rotor features a vented design that promotes efficient heat dissipation, critical for maintaining braking performance under demanding conditions. The nominal thickness of 17.80 mm and discard thickness of 16.50 mm provide clear service limits for safe operation. The rotor’s overall height measures 67.50 mm, and it has an outside diameter of 310.00 mm, matching OEM specifications for the compatible Lexus models. The mounting bolt hole circle diameter is 114.30 mm with 5 lug holes, ensuring secure installation.

Common Applications and Problem Solving

• Replacement for worn or warped rear rotors on Lexus GS and IS series
• Addresses brake noise and vibration issues caused by rotor surface irregularities
• Helps restore proper braking performance and pedal feel
• Prevents rust and corrosion-related rotor damage with Geomet coating
• Reduces brake fade through vented rotor design for improved heat management

Installation Notes and Tips

• Ensure compatibility with Lexus GS300, GS350, GS430, GS450h, GS460, IS250, and IS350 before installation
• Inspect brake pads and replace if worn to maintain optimal braking performance
• Clean mounting surfaces and check for hub runout to prevent uneven rotor wear
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Follow proper bedding-in procedures after installation for best results

Quality Assurance and Warranty

Power Stop rotors, including the JBR1148EVC, are manufactured to meet or exceed OEM standards for fit, form, and function. The Geomet coating provides additional protection against corrosion, extending rotor service life. While specific warranty details are not provided here, Power Stop products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.