DuraGo BR55066 Disc Brake Rotor - Rear

Overview of DuraGo BR55066 Disc Brake Rotor

The DuraGo BR55066 is a cast iron vented disc brake rotor designed for reliable braking performance. Engineered for select Chevrolet and GMC models, this rotor offers consistent stopping power and durability for vehicles like the Silverado 1500 and Yukon XL 1500.

• Material: Full cast iron construction for strength and heat dissipation
• Vented rotor design to improve cooling and reduce brake fade
• Outside diameter of 12.8 inches (325 mm) for precise fitment
• Mounting bolt hole quantity: 6 with a 5.5 inch (139.7 mm) bolt circle diameter
• Drum-in-hat type rotor with a center hole diameter of 3.09 inches (78.6 mm)
• Nominal thickness of 0.79 inches (20 mm) and discard thickness of 0.73 inches (18.5 mm)
• Non-directional brake surface for flexible installation

Detailed Product Description

The DuraGo BR55066 disc brake rotor is constructed from full cast iron, providing a durable and heat-resistant braking surface. Its vented design allows air to flow between the rotor faces, helping to dissipate heat during heavy braking and reducing the risk of brake fade. This rotor features a drum-in-hat design, integrating the parking brake drum into the rotor assembly, which is common in many Chevrolet and GMC trucks and SUVs.

With an outside diameter of 12.8 inches and a thickness specification that includes a nominal thickness of 0.79 inches and a discard thickness of 0.73 inches, this rotor meets OEM standards for fit and function. The six mounting bolt holes with a 5.5 inch bolt circle diameter ensure secure attachment to the hub. The non-directional brake surface allows for installation on either side of the vehicle without concern for rotor orientation.

Compatible Vehicles and Applications

This rotor is compatible with a range of Chevrolet and GMC models, including:

• Chevrolet Astro and Safari vans
• Chevrolet Avalanche 1500
• Chevrolet Silverado 1500, 1500 Classic, and 2500
• Chevrolet Suburban 1500 and Tahoe
• GMC Sierra 1500, 1500 Classic, and 1500 HD
• GMC Yukon and Yukon XL 1500

Common Issues Addressed by DuraGo BR55066

• Warped or uneven rotors causing brake pulsation
• Excessive rotor wear leading to reduced braking efficiency
• Overheating and brake fade during heavy use
• Corrosion-related rotor surface damage (note: this rotor does not have rust-resistant coating)
• Incompatibility with drum-in-hat parking brake systems

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.73 inches) before installation
• Clean mounting surfaces to prevent rotor runout and vibration
• Torque mounting bolts to manufacturer specifications for secure fitment
• Check compatibility with vehicle ABS systems; this rotor does not include an ABS tone ring
• Inspect brake pads and hardware during rotor replacement for optimal performance

Quality Assurance and Warranty

DuraGo manufactures the BR55066 rotor to meet or exceed OEM specifications for fit, form, and function. The full cast iron construction and vented design contribute to consistent braking performance under normal operating conditions. While this rotor does not feature a rust-resistant coating, proper maintenance can help extend its service life. Warranty coverage details should be confirmed with the product documentation or supplier.