DuraGo BR900558 Disc Brake Rotor - Rear

Durable Disc Brake Rotor for BMW X3

The DuraGo BR900558 disc brake rotor is engineered to provide reliable braking performance for your BMW X3. Crafted from cast iron with a full cast construction, this vented rotor is designed to maintain consistent stopping power under various driving conditions.

• Material: Cast iron for durability and heat dissipation
• Vented design to improve cooling and reduce brake fade
• Nominal thickness of 0.87 inches (22 mm) with discard thickness at 0.8 inches (20.4 mm)
• Outside diameter of 12.6 inches (320 mm) for precise fitment
• Drum-in-hat type rotor with 5 mounting bolt holes
• Non-directional brake surface for versatile installation
• Center hole diameter of 2.95 inches (75 mm) and mounting bolt hole circle diameter of 4.72 inches (120 mm)

Technical Details and Construction

The DuraGo BR900558 rotor features a full cast iron construction, which offers a balance of strength and heat management essential for braking components. Its vented design allows air to flow between the rotor surfaces, helping to dissipate heat more effectively during braking. This rotor has a nominal thickness of 0.87 inches (22 mm) and a discard thickness of 0.8 inches (20.4 mm), ensuring it meets safety standards for wear limits. The overall height measures 3.13 inches (79.6 mm), and the rotor includes a drum-in-hat design, integrating the parking brake drum within the rotor assembly.

Compatible Vehicles and Applications

This disc brake rotor is specifically compatible with BMW X3 models, providing a direct replacement for the original equipment part. The part number BR900558 ensures precise fitment with the vehicle’s brake system, including the 5 mounting bolt holes and correct bolt circle diameter. It is designed for use in standard braking systems without ABS tone rings and does not feature cross-drilled or slotted surfaces.

• Replacement for worn or damaged rotors on BMW X3
• Addresses brake noise and vibration issues
• Restores proper braking performance and pedal feel
• Helps resolve rotor warping and uneven wear
• Suitable for vehicles requiring drum-in-hat type rotors

Installation Notes and Tips

When installing the DuraGo BR900558 rotor, ensure the rotor thickness is within the nominal range and above the discard thickness to maintain safety. Clean the rotor surface to remove any protective coatings or debris before installation. Verify the mounting bolt hole alignment and torque specifications according to BMW X3 manufacturer guidelines. Since this rotor does not include an ABS tone ring, confirm compatibility with your vehicle’s ABS system if applicable.

Quality Assurance and Warranty

DuraGo manufactures this disc brake rotor to meet industry standards for material quality and dimensional accuracy. The cast iron construction and vented design contribute to consistent braking performance and durability. While specific warranty details are not provided, DuraGo products typically adhere to quality control processes to ensure reliability in automotive applications.