Raybestos 680394PER Disc Brake Rotor - Rear

Overview of Raybestos 680394PER Disc Brake Rotor

The Raybestos 680394PER disc brake rotor is engineered for Ford F-250 Super Duty and F-350 Super Duty trucks, providing reliable braking performance. Designed with precise specifications, this rotor supports heavy-duty applications while maintaining consistent stopping power.

• Compatible with Ford F-250 Super Duty and F-350 Super Duty models
• Drum-in-hat type rotor design for integrated parking brake functionality
• Nominal thickness of 1.340 inches (34.050 mm) ensures durability
• Discard thickness set at 1.280 inches (32.500 mm) for safety limits
• Mounting bolt hole circle diameter of 127.000 mm (5.000 inches) for exact fitment

Specialty - Street Performance; S-Groove Technology Line Details

This rotor is part of the Raybestos Specialty - Street Performance; S-Groove Technology line, which focuses on delivering enhanced braking characteristics for street-driven vehicles. The S-Groove design helps reduce brake fade and improves pad bite, making it suitable for Ford Super Duty trucks used in demanding street and light performance conditions.

Technical Specifications and Features

The 680394PER rotor features a drum-in-hat design, integrating the parking brake drum within the rotor hat for a compact and efficient assembly. With a nominal thickness of 1.340 inches (34.050 mm), it offers a robust braking surface, while the discard thickness of 1.280 inches (32.500 mm) defines the minimum safe thickness to maintain braking integrity. The mounting bolt hole circle diameter measures 127.000 mm (5.000 inches), ensuring precise alignment with the Ford F-250 and F-350 Super Duty hubs.

Applications and Problem Solving

• Replacement for worn or warped rotors on Ford F-250 Super Duty and F-350 Super Duty
• Addresses brake pulsation and vibration issues caused by uneven rotor surfaces
• Restores proper parking brake function with drum-in-hat design
• Improves braking consistency under heavy load or towing conditions
• Prevents rotor thickness-related brake fade by adhering to discard thickness limits

Installation Notes and Tips

When installing the Raybestos 680394PER rotor, ensure the mounting surface is clean and free of debris to maintain proper rotor alignment. Verify the mounting bolt hole circle diameter matches the vehicle hub specifications. It is recommended to replace brake pads simultaneously to optimize braking performance. Follow manufacturer torque specifications for mounting bolts to avoid rotor warping.

Quality Assurance and Warranty

Raybestos rotors undergo rigorous quality control to meet OEM standards for fit, form, and function. The 680394PER disc brake rotor is manufactured to provide consistent performance and durability for Ford Super Duty trucks. Warranty coverage details should be confirmed with the product documentation or authorized Raybestos distributors.