DuraGo BR55057 Disc Brake Rotor - Rear

Overview of DuraGo BR55057 Disc Brake Rotor

The DuraGo BR55057 disc brake rotor is engineered for reliable braking performance on heavy-duty vehicles. Designed specifically for select Chevrolet, GMC, and Hummer models, this rotor offers durable cast iron construction and vented design to support effective heat dissipation during braking.

• Material: Cast iron for strength and durability
• Vented rotor design to reduce heat buildup
• Drum-in-hat construction for integrated parking brake compatibility
• Outside diameter of 12.99 inches (330 mm) for precise fitment
• Eight mounting bolt holes with a 6.5-inch bolt circle diameter
• Nominal thickness of 1.14 inches (29 mm) with discard thickness at 1.04 inches (26.5 mm)
• Non-directional brake surface for versatile installation
• Overall height of 3.43 inches (87 mm)

Detailed Product Description

The DuraGo BR55057 is a full cast iron disc brake rotor designed to meet the demands of heavy-duty trucks and SUVs. Its vented construction allows air to flow between the rotor surfaces, helping to dissipate heat and maintain consistent braking performance under load. The drum-in-hat design integrates a parking brake drum within the rotor, making it suitable for vehicles equipped with drum parking brakes. This rotor does not include an ABS tone ring and features a non-directional braking surface, allowing for flexible installation without concern for rotor orientation.

With an outside diameter of 12.99 inches and a center hole diameter of 4.63 inches (117.7 mm), the BR55057 is engineered to fit a range of Chevrolet, GMC, and Hummer models, including the Chevrolet Silverado 1500 HD, GMC Sierra 2500 HD, and Hummer H2. The rotor’s thickness specifications ensure it meets OEM standards for durability and performance, with a nominal thickness of 1.14 inches and a discard thickness of 1.04 inches.

Compatible Vehicles and Applications

• Chevrolet Avalanche 2500
• Chevrolet Express 2500 and 3500
• Chevrolet Silverado 1500 HD, 1500 HD Classic, 2500, and 2500 HD
• Chevrolet Suburban 2500
• GMC Sierra 1500 HD, 1500 HD Classic, 2500, and 2500 HD
• GMC Savana 2500 and 3500
• GMC Yukon XL 2500
• Hummer H2

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat during heavy towing or hauling
• Uneven rotor wear leading to vibration or noise during braking
• Reduced braking efficiency due to worn or warped rotors
• Compatibility issues with drum-in-hat parking brake systems
• Corrosion and structural degradation in older rotors (note: this rotor does not have rust-resistant coating)

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (1.04 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’s parking brake system due to drum-in-hat design
• Inspect brake pads and hardware during rotor replacement for optimal performance

Quality Assurance and Warranty

DuraGo manufactures the BR55057 rotor to meet or exceed OEM specifications for fit, form, and function. Constructed from durable cast iron, this rotor is designed for consistent braking performance under demanding conditions. While this product does not include a rust-resistant coating, proper maintenance can help extend service life. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.