Raybestos 680021R Disc Brake Rotor and Hub Assembly - Front

Overview of Raybestos R-Line Disc Brake Rotor and Hub Assembly

The Raybestos R-Line 680021R disc brake rotor and hub assembly is engineered for reliable braking performance on Ford Explorer Sport and Explorer Sport Trac models. Designed to meet precise fitment specifications, this assembly ensures proper installation and consistent operation.

• Compatible with Ford Explorer Sport and Explorer Sport Trac
• Part number 680021R for exact replacement
• Includes disc brake rotor and hub assembly
• Mounting bolt hole quantity: 5 with 114.3 mm bolt circle diameter
• Nominal rotor thickness: 1.025 inches (26.05 mm)
• Discard thickness: 0.965 inches (24.5 mm)
• Mounting bolt hole diameter: 0.54 inches (13.7 mm)
• Stud/lug hole quantity: 5

Detailed Product Specifications

This disc brake rotor and hub assembly features a nominal thickness of 1.025 inches (26.05 mm), providing the necessary material thickness for effective heat dissipation and braking stability. The discard thickness is set at 0.965 inches (24.5 mm), indicating the minimum safe thickness before replacement is required. The assembly includes five mounting bolt holes arranged on a 114.3 mm bolt circle diameter, with each hole measuring 0.54 inches (13.7 mm) in diameter. This configuration matches the factory specifications for the Ford Explorer Sport and Explorer Sport Trac, ensuring a secure and precise fit.

About the Raybestos R-Line Product Line

The R-Line from Raybestos is a product line focused on delivering reliable, OE-quality brake components designed to meet or exceed original equipment specifications. This line emphasizes durability and consistent performance, making it suitable for drivers who require dependable braking parts for their Ford Explorer Sport and Explorer Sport Trac vehicles. The 680021R part number within the R-Line reflects these standards, providing a direct replacement for factory-installed rotor and hub assemblies.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing excessive rotor thickness wear beyond discard limits
• Fixing hub assembly issues such as noise or vibration during braking
• Restoring proper mounting bolt alignment and secure fitment
• Improving braking performance on Ford Explorer Sport and Explorer Sport Trac

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Verify that the mounting bolt holes and stud/lug holes align correctly with the vehicle hub. Measure rotor thickness to confirm it meets nominal specifications before installation. Use proper torque specifications for mounting bolts to avoid damage or misalignment. It is recommended to inspect related brake components such as pads and calipers during installation for optimal performance.

Quality Assurance and Warranty

Raybestos R-Line brake components are manufactured to meet stringent quality standards, ensuring durability and consistent braking performance. While specific warranty details for part number 680021R should be confirmed with the supplier or manufacturer, Raybestos typically offers coverage against defects in materials and workmanship. Proper installation and maintenance are essential to maintain product reliability.