Raybestos 780390R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 780390R

The Raybestos R-Line 780390R disc brake rotor is engineered for reliable braking performance on select Chrysler and Dodge vehicles. Designed as a vented, drum-in-hat type rotor, it offers effective heat dissipation and durability for models like the Chrysler 300, Dodge Challenger, Charger, and Magnum.

• Vented disc brake rotor with drum-in-hat design
• Outside diameter: 13.780 inches (350 mm)
• Nominal thickness: 1.102 inches (28 mm)
• Discard thickness: 1.024 inches (26 mm)
• Overall height: 2.677 inches (68 mm)
• Mounting bolt hole quantity: 5 with 0.654 inch (16.6 mm) diameter
• Center hole diameter: 2.859 inches (72.6 mm)
• Mounting bolt hole circle diameter: 4.528 inches (115 mm)
• Stud/lug hole quantity: 5

Detailed Product Description

The Raybestos R-Line 780390R rotor is a vented disc brake rotor featuring a drum-in-hat design, which integrates the parking brake drum into the rotor assembly. This design is common in many Chrysler and Dodge vehicles, including the Chrysler 300 and Dodge Charger. The rotor measures 13.780 inches in outside diameter, providing ample surface area for effective braking. Its nominal thickness of 1.102 inches ensures structural integrity and heat resistance, while the discard thickness of 1.024 inches indicates the minimum safe thickness before replacement is necessary. The overall height of 2.677 inches accommodates the rotor’s vented structure, which helps dissipate heat during braking to reduce fade and maintain consistent performance.

The rotor features five mounting bolt holes with a diameter of 0.654 inches arranged on a 4.528-inch bolt circle diameter, compatible with the specified vehicle models. The center hole diameter of 2.859 inches ensures proper fitment on the hub assembly. This rotor is designed to work with vehicles that require a 5-lug stud pattern, such as the Dodge Magnum and Dodge Challenger.

R-Line Product Line Information

The Raybestos R-Line product line focuses on delivering reliable, OE-quality brake components suitable for a range of domestic vehicles. The R-Line rotors are engineered to meet or exceed original equipment specifications, providing consistent performance and durability. The 780390R rotor exemplifies this approach by combining precise fitment with robust construction, making it a practical replacement part for compatible Chrysler and Dodge models.

Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Restores braking efficiency on Chrysler 300, Dodge Charger, Challenger, and Magnum
• Addresses rotor thickness below manufacturer discard limits
• Improves heat dissipation to reduce brake fade during heavy use
• Compatible with vehicles requiring vented, drum-in-hat rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean mounting surfaces to prevent rotor runout
• Torque mounting bolts to manufacturer specifications
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Check hub and bearing condition during installation

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet strict quality standards, ensuring consistent dimensions and material integrity. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship. Always verify warranty terms with the supplier or manufacturer documentation.