Raybestos 980039R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 980039R

The Raybestos R-Line Disc Brake Rotor 980039R is engineered for reliable braking performance on select Mercedes-Benz models. Designed as a vented, conventional rotor, it offers precise fitment and durability for vehicles like the Mercedes-Benz CL500, S430, and S500.

• Vented disc brake rotor for improved heat dissipation
• Overall height: 2.303 inches (58.5 mm)
• Outside diameter: 11.811 inches (300 mm)
• Nominal thickness: 0.866 inches (22 mm)
• Discard thickness: 0.764 inches (19.4 mm)
• 5 mounting bolt holes with 4.409 inch (112 mm) bolt circle diameter
• Center hole diameter: 2.638 inches (67 mm)
• Compatible with Mercedes-Benz CL500, S430, and S500 models

Detailed Product Description

This Raybestos R-Line rotor (part number 980039R) is a vented, conventional disc brake rotor designed to meet the specifications required by Mercedes-Benz vehicles such as the CL500, S430, and S500. The vented design enhances heat dissipation during braking, helping to reduce brake fade and maintain consistent stopping power. With an outside diameter of 11.811 inches (300 mm) and a nominal thickness of 0.866 inches (22 mm), this rotor provides a solid braking surface while maintaining structural integrity. The discard thickness of 0.764 inches (19.4 mm) indicates the minimum safe thickness before replacement is necessary, ensuring safety and performance standards are met.

Raybestos R-Line Product Line Information

The R-Line from Raybestos focuses on delivering reliable, OE-quality brake components designed for specific vehicle applications. This product line emphasizes precise fitment and consistent performance, making it suitable for professional repairs and maintenance. The 980039R rotor is part of this line, offering a balance of durability and performance tailored for Mercedes-Benz braking systems.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Restores braking efficiency on Mercedes-Benz CL500, S430, and S500
• Addresses rotor thickness below manufacturer discard limits
• Improves heat dissipation to reduce brake fade during heavy use
• Eliminates noise and vibration related to damaged rotors

Installation Notes and Tips

• Ensure rotor thickness is measured before installation to confirm discard limits
• Clean mounting surfaces to prevent rotor runout and vibration
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Perform a proper bed-in procedure after installation for consistent braking

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. While specific warranty details for part number 980039R should be confirmed with the supplier, Raybestos typically offers coverage against defects in materials and workmanship. This ensures that the rotor maintains reliable performance throughout its service life when installed and maintained properly.