Raybestos 980399 Disc Brake Rotor - Rear

Overview of Raybestos Specialty - Truck Disc Brake Rotor 980399

The Raybestos Specialty - Truck disc brake rotor 980399 is engineered for reliable braking performance on BMW X3 models. Designed with precision, this vented rotor supports effective heat dissipation and consistent stopping power under demanding conditions.

• Vented disc brake rotor with drum-in-hat design
• Outside diameter: 12.589 inches (319.75 mm)
• Nominal thickness: 0.866 inches (22.00 mm)
• Discard thickness: 0.803 inches (20.40 mm)
• Overall height: 3.134 inches (79.60 mm)
• Mounting bolt hole quantity: 5 with 0.654 inch (16.60 mm) diameter
• Center hole diameter: 2.953 inches (75.00 mm)
• Mounting bolt hole circle diameter: 4.724 inches (120.00 mm)
• Stud/lug hole quantity: 5

Raybestos Specialty - Truck Product Line Details

The Specialty - Truck line by Raybestos focuses on heavy-duty and specialty vehicle applications, providing components designed to meet the rigorous demands of truck and SUV braking systems. This product line emphasizes durability and performance, making it suitable for vehicles like the BMW X3 that require robust braking solutions.

Technical Description and Specifications

This disc brake rotor features a vented design to improve heat dissipation during braking, reducing the risk of brake fade. The drum-in-hat configuration integrates a parking brake drum within the rotor, combining two functions into one component. With a nominal thickness of 0.866 inches and a discard thickness of 0.803 inches, this rotor ensures a clear service life indicator for replacement. The rotor’s 12.589-inch outside diameter and 3.134-inch overall height are engineered to fit precisely on BMW X3 models, ensuring proper alignment and performance. The 5 mounting bolt holes and stud/lug holes provide secure attachment to the wheel hub assembly.

Compatible Applications and Problem Solving

• Compatible with BMW X3 models requiring vented disc brake rotors
• Addresses brake rotor wear and thickness below manufacturer specifications
• Resolves issues related to brake fade caused by overheating
• Replaces warped or damaged rotors affecting braking smoothness
• Supports parking brake functionality with integrated drum-in-hat design

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 0.803 inches before installation. Clean the hub surface to remove rust and debris for proper rotor seating. Torque mounting bolts to manufacturer specifications to avoid rotor warping. Verify compatibility with BMW X3 brake calipers and hardware. The drum-in-hat design requires proper alignment with the parking brake assembly during installation.

Quality Assurance and Warranty

Raybestos disc brake rotors undergo rigorous quality control to meet OEM standards. The Specialty - Truck line is designed for durability and consistent performance under heavy-duty conditions. Warranty coverage details should be confirmed with the product documentation or manufacturer.