DuraGo BR900434 Disc Brake Rotor - Rear

Durable Cast Iron Disc Brake Rotor for Audi A4 and A4 Quattro

The DuraGo BR900434 disc brake rotor is engineered to provide reliable braking performance for Audi A4 and A4 Quattro models. Constructed from full cast iron, this solid rotor offers consistent stopping power and durability for everyday driving conditions.

• Material: Full cast iron construction for strength and heat dissipation
• Rotor Type: Solid, conventional disc brake rotor
• Outside Diameter: 11.34 inches (288 mm)
• Nominal Thickness: 0.47 inches (12 mm)
• Discard Thickness: 0.39 inches (10 mm)
• Mounting Bolt Holes: 5 holes with 0.6 inch (15.2 mm) diameter
• Center Hole Diameter: 2.68 inches (68 mm)
• Mounting Bolt Hole Circle Diameter: 4.41 inches (112 mm)
• Non-directional brake surface design
• No ABS tone ring included
• No rust resistant coating

Technical Details and Construction

The DuraGo BR900434 rotor is a solid, full cast iron disc designed for the braking systems of Audi A4 and A4 Quattro vehicles. Its 11.34-inch diameter and 0.47-inch nominal thickness provide a robust braking surface that meets OEM specifications. The rotor’s conventional design ensures compatibility with standard caliper setups without the need for directional installation. Although it does not include an ABS tone ring or rust-resistant coating, the rotor’s cast iron material offers reliable heat dissipation and wear resistance under normal operating conditions.

Compatible Vehicles and Applications

This disc brake rotor is specifically compatible with the following Audi models:

• Audi A4
• Audi A4 Quattro

It is designed to replace worn or damaged rotors and restore proper braking function in these vehicles.

Common Issues Addressed by This Rotor

• Brake pulsation caused by warped rotors
• Reduced braking efficiency due to worn rotor thickness
• Noise and vibration from uneven rotor surfaces
• Overheating and brake fade during normal driving
• Corrosion-related rotor surface degradation (note: no rust-resistant coating)

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.39 inches) before installation
• Clean mounting surfaces to prevent uneven rotor seating
• Torque mounting bolts to manufacturer specifications (5 bolts, 0.6 inch diameter)
• Check caliper and brake pad condition during rotor replacement
• Perform a test drive to verify braking performance after installation

Quality Assurance and Warranty

DuraGo disc brake rotors are manufactured to meet industry standards for fit, form, and function. The BR900434 rotor undergoes quality control inspections to ensure dimensional accuracy and material integrity. While no specific rust-resistant coating is applied, the rotor’s cast iron construction provides consistent performance. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.