DuraGo BR55055 Disc Brake Rotor - Rear

Overview of DuraGo BR55055 Disc Brake Rotor

The DuraGo BR55055 disc brake rotor is engineered for reliable braking performance on heavy-duty Chevrolet and GMC trucks and vans. Designed specifically for models like the Silverado 2500 HD and Sierra 3500 HD, this rotor offers durable construction and precise fitment to maintain vehicle safety and control.

• Material: Cast iron for strength and heat dissipation
• Construction: Full cast, vented rotor design
• Outside Diameter: 12.99 inches (330 mm)
• Nominal Thickness: 1.14 inches (29 mm)
• Discard Thickness: 1.06 inches (27 mm)
• Mounting Bolt Holes: 8 holes with 0.65 inch (16.5 mm) diameter
• Center Hole Diameter: 4.84 inches (122.9 mm)
• Rotor Type: Drum-in-hat with vented design for heat management
• Non-directional brake surface

Detailed Product Description

The DuraGo BR55055 rotor is a vented, full cast iron disc brake rotor designed to meet the demands of heavy-duty Chevrolet and GMC vehicles, including the Avalanche 2500, Express 3500, and Yukon XL 2500. Its vented construction helps dissipate heat more effectively during braking, reducing the risk of brake fade under heavy loads or extended use. The drum-in-hat design integrates a parking brake drum within the rotor, providing a compact and efficient braking solution for these truck and van models.

With an outside diameter of 12.99 inches and a nominal thickness of 1.14 inches, this rotor maintains the proper dimensions for optimal brake pad contact and rotor longevity. The 8 mounting bolt holes and precise center hole diameter ensure a secure fit on compatible Chevrolet and GMC models. The non-directional brake surface allows for flexible installation without concern for rotor orientation.

Compatible Vehicles and Applications

• Chevrolet Avalanche 2500
• Chevrolet Express 2500 and 3500
• Chevrolet Suburban 2500
• Chevrolet Silverado 2500, 2500 HD, 3500, and 3500 HD (including Classic models)
• GMC Sierra 2500, 2500 HD, 3500, and 3500 HD (including Classic models)
• GMC Savana 2500 and 3500
• GMC Yukon XL 2500

Common Issues Addressed by This Rotor

• Brake rotor warping or uneven wear causing vibration
• Reduced braking efficiency due to worn or thin rotors
• Overheating and brake fade during heavy towing or hauling
• Corrosion-related rotor 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 (1.06 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 disc brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The BR55055 rotor undergoes rigorous quality control to ensure durability and consistent braking performance. While this product does not include a rust-resistant coating, its cast iron construction provides reliable strength and heat dissipation. Warranty coverage details should be confirmed with the product documentation or supplier.