Raybestos 680990PER Disc Brake Rotor - Rear

Overview of Raybestos Disc Brake Rotor 680990PER

The Raybestos Specialty - Street Performance; S-Groove Technology disc brake rotor 680990PER is engineered for Ford Mustang models requiring reliable braking performance. This vented rotor is designed to maintain optimal thickness and heat dissipation for consistent stopping power.

• Compatible with Ford Mustang vehicles
• Vented disc brake rotor for improved cooling
• Nominal thickness of 0.748 inches (19.000 mm)
• Discard thickness of 0.689 inches (17.500 mm)
• Outside diameter measures 13.780 inches (350.000 mm)
• Inside diameter of 10.366 inches (263.300 mm)
• Overall height of 1.366 inches (34.700 mm)
• Five mounting bolt holes with a 4.500 inch (114.300 mm) bolt circle diameter
• Center hole diameter of 2.785 inches (70.750 mm)
• Conventional rotor type with 5 stud/lug holes

Specialty - Street Performance; S-Groove Technology Line

This rotor is part of the Raybestos Specialty - Street Performance; S-Groove Technology line, which focuses on delivering street-ready braking components optimized for performance driving. The S-Groove design helps reduce brake fade and improve pad contact, making it suitable for Ford Mustang owners seeking dependable braking under varied driving conditions.

Technical Details and Specifications

The 680990PER rotor features a vented design that enhances heat dissipation during braking, reducing the risk of warping and maintaining consistent performance. With a nominal thickness of 0.748 inches and a discard thickness of 0.689 inches, this rotor ensures a clear service life window for maintenance. The 13.780-inch outside diameter and 10.366-inch inside diameter provide a precise fit for compatible Mustang models. The rotor’s overall height of 1.366 inches and five mounting bolt holes with a 4.500-inch bolt circle diameter align with factory specifications for secure installation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Ford Mustang vehicles
• Improves braking consistency and reduces brake fade
• Addresses rotor thickness below manufacturer discard limits
• Enhances heat dissipation during aggressive street driving
• Restores proper rotor dimensions for safe braking performance

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify that the mounting bolt holes and center hole align precisely with the vehicle hub. Measure rotor thickness to confirm it meets or exceeds the nominal thickness of 0.748 inches. Use proper torque specifications for the five mounting bolts to avoid rotor distortion. It is recommended to inspect brake pads and hardware during rotor replacement for optimal system performance.

Quality Assurance and Warranty

Raybestos disc brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The 680990PER rotor undergoes rigorous quality control to ensure durability and consistent braking performance. Warranty coverage details should be confirmed with the product documentation or authorized Raybestos distributors.