Raybestos 780421PER Disc Brake Rotor - Front

Overview of Raybestos Disc Brake Rotor 780421PER for Jeep Grand Cherokee

The Raybestos Specialty - Street Performance; S-Groove Technology disc brake rotor 780421PER is engineered for Jeep Grand Cherokee models requiring reliable braking performance. Designed with precise thickness specifications and mounting dimensions, this rotor supports consistent stopping power and durability.

• Compatible with Jeep Grand Cherokee vehicles
• Nominal thickness: 1.260 inches (32.000 mm)
• Discard thickness: 1.120 inches (28.450 mm)
• Mounting bolt hole circle diameter: 127.000 mm (5.000 inches)
• Conventional rotor type for standard brake systems

Detailed Specifications and Features

This Raybestos disc brake rotor, part number 780421PER, features a nominal thickness of 1.260 inches (32.000 mm), ensuring optimal rotor mass for heat dissipation and structural integrity. The discard thickness is set at 1.120 inches (28.450 mm), indicating the minimum safe thickness before replacement is necessary. The mounting bolt hole circle diameter measures 127.000 mm (5.000 inches), matching the bolt pattern of Jeep Grand Cherokee models for secure installation. This rotor is a conventional type, designed to fit standard brake systems without drum-in-hat configurations.

Specialty - Street Performance; S-Groove Technology Product Line

The Raybestos Specialty - Street Performance; S-Groove Technology line focuses on delivering rotors optimized for street driving conditions. The S-Groove design helps reduce brake fade and maintain consistent friction by managing heat and debris on the rotor surface. This technology supports enhanced braking performance for Jeep Grand Cherokee owners seeking dependable stopping power during everyday driving and light performance use.

Applications and Problem Solving

• Replacement for worn or warped rotors on Jeep Grand Cherokee models
• Addresses brake pulsation caused by uneven rotor thickness
• Helps restore proper braking performance and pedal feel
• Prevents rotor damage from exceeding discard thickness limits
• Compatible with conventional brake systems requiring standard mounting dimensions

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets nominal specifications
• Check mounting bolt hole circle diameter compatibility with vehicle hub
• Inspect brake pads and hardware for wear during rotor replacement
• Follow manufacturer torque specifications for mounting bolts
• Perform a brake system test after installation to confirm proper operation

Quality Assurance and Warranty

Raybestos disc brake rotors, including part number 780421PER, are manufactured to meet industry standards for durability and performance. The Specialty - Street Performance; S-Groove Technology rotors undergo rigorous quality control to ensure consistent thickness and dimensional accuracy. Warranty coverage details should be confirmed through Raybestos or authorized distributors.