DuraGo BR900420 Disc Brake Rotor - Front

Overview of DuraGo BR900420 Disc Brake Rotor

The DuraGo BR900420 disc brake rotor is engineered for reliable braking performance on select Infiniti models. Designed with durable cast iron and a vented construction, this rotor supports consistent heat dissipation and long service life for your Infiniti FX35, FX37, FX45, and QX70 vehicles.

• Material: Cast iron for strength and durability
• Vented rotor design to improve heat dissipation
• Nominal thickness of 1.34 inches (34 mm) with discard thickness at 1.26 inches (32 mm)
• Outside diameter of 12.58 inches (319.6 mm) for precise fitment
• Five mounting bolt holes with a 4.5 inch (114.3 mm) bolt circle diameter
• Full cast construction for structural integrity
• Non-directional brake surface for versatile installation
• Conventional rotor type compatible with standard braking systems

Detailed Product Description

The DuraGo BR900420 is a full cast, vented disc brake rotor made from cast iron, providing a balance of durability and heat management. Its vented design allows air to flow between the rotor surfaces, reducing the risk of brake fade during extended use. With a nominal thickness of 1.34 inches and a discard thickness of 1.26 inches, this rotor meets the specifications required for safe and effective braking. The rotor’s outside diameter of 12.58 inches and five mounting bolt holes with a 4.5 inch bolt circle diameter ensure compatibility with Infiniti FX35, FX37, FX45, and QX70 models. The non-directional brake surface allows for flexible installation without concern for rotor orientation.

Compatible Vehicles and Applications

• Infiniti FX35 (various model years)
• Infiniti FX37
• Infiniti FX45
• Infiniti QX70

This rotor is designed to replace worn or damaged rotors on these Infiniti models, restoring braking performance and safety.

Common Issues Addressed by This Rotor

• Brake rotor warping causing vibration during braking
• Excessive rotor wear leading to reduced braking efficiency
• Overheating and brake fade during heavy use
• Uneven rotor surface causing noise or pulsation
• Corrosion-related rotor degradation (note: this rotor does not have rust-resistant coating)

Installation Notes and Tips

When installing the DuraGo BR900420 rotor, ensure the rotor thickness is above the discard thickness of 1.26 inches to maintain safety standards. Clean the hub surface before mounting to prevent runout and ensure proper fitment. Since this rotor is non-directional, it can be installed on either side of the vehicle without concern for orientation. Verify that the mounting bolt holes align correctly with the vehicle’s hub assembly. It is recommended to replace brake pads simultaneously to optimize braking performance.

Quality Assurance and Warranty

DuraGo manufactures this rotor to meet or exceed OEM specifications for Infiniti FX35, FX37, FX45, and QX70 models. The full cast iron construction and vented design contribute to consistent braking performance and durability. While this rotor does not include a rust-resistant coating, proper maintenance can help extend its service life. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.