PowerStop JBR1929EVC Disc Brake Rotor - Rear

Power Stop Rear Genuine Geomet Coated Rotor Overview

The Power Stop - Rear Genuine Geomet Coated Rotor (Part Number JBR1929EVC) is engineered for reliable braking performance on the Mazda CX-50. Designed as a direct replacement disc brake rotor, it features a rust-resistant Geomet coating to extend rotor life and maintain smooth braking under various conditions.

• Compatible with Mazda CX-50 rear disc brake system
• Full cast solid rotor construction for durability
• Geomet rust-resistant coating to prevent corrosion
• Nominal thickness of 10.00 mm with discard thickness at 8.00 mm
• Outside diameter of 324.80 mm and overall height of 40.40 mm
• Standard replacement grade rotor with smooth surface finish
• 5 stud/lug hole quantity with 114.30 mm bolt circle diameter

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 OEM-quality replacement rotors with enhanced corrosion resistance. The Geomet coating applied to these rotors helps reduce rust buildup, ensuring consistent braking performance and longer service life compared to uncoated rotors. This line is designed to meet or exceed factory specifications for fit and function on compatible vehicles like the Mazda CX-50.

Technical Specifications and Features

The JBR1929EVC rotor is constructed as a full cast solid disc, offering a nominal thickness of 10.00 mm and a discard thickness of 8.00 mm, which defines the minimum safe thickness before replacement is necessary. Its outside diameter measures 324.80 mm, with an overall height of 40.40 mm, ensuring proper fitment and clearance within the rear brake assembly of the Mazda CX-50. The smooth surface finish supports consistent pad contact and braking efficiency. The rotor includes a 5-lug hole pattern with a 114.30 mm bolt circle diameter, matching the vehicle’s mounting requirements. This rotor does not include an ABS tone ring.

Applications and Problem Solving

• Replacement for worn or warped rear disc brake rotors on Mazda CX-50
• Addresses rotor corrosion issues with Geomet rust-resistant coating
• Restores braking performance affected by rotor thickness below discard limits
• Eliminates brake pulsation caused by uneven rotor surfaces
• Provides a direct fit solution for rear brake rotor maintenance

Installation Notes and Tips

When installing the Power Stop JBR1929EVC rotor, ensure the rotor thickness is measured to confirm it meets the nominal thickness specifications. Clean the rotor surface to remove any protective coating residue before installation to avoid brake pad contamination. Verify the 5-lug bolt pattern and 114.30 mm bolt circle diameter match the vehicle hub. Proper torque specifications should be followed for mounting bolts to maintain rotor alignment and safety.

Quality Assurance and Warranty

Power Stop rotors are manufactured to meet OEM standards for fit, form, and function. The Geomet coating provides additional protection against rust and corrosion, contributing to the rotor’s durability. While specific warranty details are not provided, Power Stop products typically come with a limited warranty against manufacturing defects. It is recommended to consult the product documentation or manufacturer for exact warranty terms.