Raybestos 8523R Disc Brake Rotor - Front or Rear

Raybestos R-Line 8523R Disc Brake Rotor Overview

The Raybestos R-Line 8523R is a conventional vented disc brake rotor built for vehicles that use a 6-lug, 15.000-inch rotor design. With a 381.000 mm outside diameter, 36.600 mm nominal thickness, and 33.550 mm discard thickness, it is specified for applications that require a large-diameter replacement rotor with consistent braking surface dimensions. This rotor is a direct-fit option for select heavy-duty and full-size vehicle applications, including Chevrolet Silverado and GMC Sierra fitments where the correct rotor size and bolt pattern are critical.

Key Features

• Raybestos R-Line part number 8523R
• Vented, conventional disc brake rotor design
• 15.000 in. outside diameter for large brake assemblies
• 6 mounting bolt holes and 6 stud/lug holes
• 171.450 mm bolt circle diameter
• 137.150 mm center hole diameter
• 36.600 mm nominal thickness and 33.550 mm discard thickness
• 89.050 mm overall height

R-Line Product Line Details

Raybestos R-Line covers everyday replacement brake components for drivers who need a straightforward OE-style service part. The 8523R follows that approach with a conventional vented rotor layout and application-specific dimensions that support proper wheel and hub fitment on the intended vehicle platforms. For shoppers comparing brake rotor options for Chevrolet Silverado or GMC Sierra service, the R-Line line provides a practical replacement format centered on fit and dimensional accuracy.

Detailed Description

Built as a disc brake rotor for brake service, the Raybestos 8523R uses a vented construction to help manage heat during repeated stops. Its 6-bolt pattern, 171.450 mm bolt circle, and 137.150 mm center bore are important for correct mounting on the hub, while the 15.000-inch diameter and 89.050 mm overall height define the rotor’s application-specific geometry. This part cross-references DuraGo BR5606 for the same application. If you are replacing worn front brake rotors on a Chevrolet Silverado or GMC Sierra, matching these dimensions is essential for proper brake system operation.

What This Rotor Helps Address

• Brake pulsation caused by rotor wear or thickness variation
• Reduced braking performance from a worn disc brake rotor
• Rotor replacement needs after reaching discard thickness
• Fitment issues from incorrect bolt pattern or center bore size
• Service requirements on Chevrolet Silverado and GMC Sierra brake systems

Installation Notes and Tips

Verify the rotor’s 15.000-inch outside diameter, 6-lug pattern, and 137.150 mm center hole diameter before installation. Measure the existing rotor and compare nominal thickness, discard thickness, and overall height to confirm the replacement matches the vehicle’s brake package. For best results, inspect pads, calipers, and hub surfaces during service, and confirm the application against the vehicle’s brake specifications before installing the Raybestos 8523R.

Quality Assurance

Raybestos is a recognized brake parts brand with a long history in replacement braking components, and the R-Line is positioned as a practical service line for routine brake maintenance. The 8523R is built to the listed dimensional specifications for the intended applications.