DuraGo BR900778 Disc Brake Rotor - Rear

Overview of DuraGo BR900778 Disc Brake Rotor

The DuraGo BR900778 disc brake rotor is engineered for reliable braking performance on BMW 325xi models. Crafted from durable cast iron, this vented rotor is designed to maintain consistent stopping power under various driving conditions.

• Material: Cast iron for strength and heat dissipation
• Vented rotor design to improve cooling
• Drum-in-hat construction for integrated parking brake function
• Non-directional brake surface for versatile installation
• Five mounting bolt holes with precise fitment dimensions

Detailed Product Features and Specifications

This DuraGo disc brake rotor (part number BR900778) features a full cast construction that ensures structural integrity and durability. The rotor has a nominal thickness of 0.75 inches (19 mm) and a discard thickness of 0.69 inches (17.4 mm), indicating when replacement is necessary to maintain safe braking. Its overall height measures 2.38 inches (60.5 mm), and the outside diameter is 11.57 inches (294 mm), matching OEM specifications for the BMW 325xi. The rotor includes five mounting bolt holes arranged in a 120 mm bolt circle diameter, with each hole measuring 0.58 inches (14.7 mm) in diameter. The center hole diameter is 2.95 inches (75 mm), ensuring proper hub fitment. This rotor does not include an ABS tone ring and is not cross-drilled or slotted, focusing on standard braking performance without additional features.

Compatible Vehicles and Applications

This disc brake rotor is specifically compatible with BMW 325xi models, providing a direct replacement for worn or damaged rotors. It is designed to work with vehicles equipped with drum-in-hat type rotors, integrating the parking brake mechanism within the rotor assembly.

• Replaces worn or warped rotors causing vibration or noise
• Restores braking efficiency and pedal feel
• Addresses rotor thickness below discard limits
• Eliminates brake judder and uneven pad wear
• Supports proper parking brake operation with drum-in-hat design

Installation Notes and Tips

When installing the DuraGo BR900778 rotor on a BMW 325xi, ensure the rotor surface is clean and free of any protective coatings or debris before mounting. Verify that the rotor thickness meets or exceeds the nominal thickness specification. Use proper torque settings on the five mounting bolts to secure the rotor firmly. Since this rotor is non-directional, it can be installed on either side of the vehicle without concern for rotation direction. It is recommended to replace brake pads simultaneously to ensure optimal braking performance.

Quality Assurance and Warranty Information

DuraGo manufactures this disc brake rotor to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides consistent heat dissipation and durability under normal driving conditions. While this rotor does not feature a rust-resistant coating, proper maintenance and installation will help extend its service life. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.