Raybestos 981085R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 981085R

The Raybestos R-Line Disc Brake Rotor 981085R is engineered for reliable braking performance on select Mercedes-Benz models. Designed as a vented, conventional rotor, it offers consistent heat dissipation and durability for vehicles like the GLE43 AMG and ML350.

• Vented disc brake rotor with smooth surface finish
• Nominal thickness of 0.866 inches (22.000 mm) and discard thickness of 0.764 inches (19.400 mm)
• Outside diameter measures 12.992 inches (330.000 mm)
• Inside diameter of 9.311 inches (236.500 mm) with a center hole diameter of 2.638 inches (67.000 mm)
• Five mounting bolt holes with a bolt circle diameter of 4.409 inches (112.000 mm)
• Overall height of 2.134 inches (54.200 mm)

Detailed Product Description

This Raybestos R-Line rotor (part number 981085R) is a vented, conventional disc brake rotor designed to meet the specifications required by various Mercedes-Benz models including the GLE350, GLE450 AMG, and ML550. The vented design improves heat dissipation during braking, reducing the risk of brake fade under demanding conditions. The smooth surface type ensures consistent pad contact and braking efficiency. With a nominal thickness of 0.866 inches and a discard thickness of 0.764 inches, this rotor maintains structural integrity and safety throughout its service life. The precise fitment is ensured by the five mounting bolt holes arranged on a 4.409-inch bolt circle diameter, matching the OEM specifications for the listed vehicles.

Compatible Mercedes-Benz Models

• Mercedes-Benz GLE43 AMG
• Mercedes-Benz GLE300d
• Mercedes-Benz GLE350 and GLE350d
• Mercedes-Benz GLE400 and GLE450 AMG
• Mercedes-Benz GLE550 and GLE550e
• Mercedes-Benz ML250, ML350, ML400, and ML550

Raybestos R-Line Product Line

The R-Line by Raybestos focuses on delivering reliable, OEM-quality brake components designed for professional repair and maintenance. This product line emphasizes durability and consistent performance, making it suitable for drivers who require dependable braking on their Mercedes-Benz vehicles. The 981085R rotor exemplifies the R-Line’s commitment to meeting exacting fitment and material standards.

Common Issues Addressed by This Rotor

• Brake rotor warping causing vibration during braking
• Reduced braking efficiency due to worn or thin rotors
• Overheating and brake fade from insufficient heat dissipation
• Uneven brake pad wear linked to rotor surface irregularities
• Noise and pulsation caused by damaged or out-of-spec rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.764 inches) before installation
• Clean mounting surfaces to prevent rotor misalignment
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to maintain optimal braking
• Perform a bed-in procedure after installation to ensure proper rotor and pad contact

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards for fit, form, and function. Each rotor undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship, providing confidence in the 981085R rotor’s reliability for Mercedes-Benz GLE and ML series vehicles.