Centric 320.34077H Disc Brake Rotor - Front

Overview of Centric GCX Elemental Protection Disc Brake Rotor

The Centric GCX Elemental Protection Disc Brake Rotor (part number 320.34077H) is engineered for reliable braking performance on select BMW models. Designed with a full coating and high carbon content, this rotor offers enhanced durability and corrosion resistance for vehicles like the BMW 320i and 328xi.

• Full coating on disc and hat for corrosion protection
• High carbon content for improved heat dissipation and reduced brake noise
• Vented rotor design with straight vane style for efficient cooling
• Floating disc mounting for better rotor alignment and performance
• Compatible with BMW 120i, 125i, 128i, 320i, 325i, 325xi, 328i, and 328xi models
• Nominal thickness of 0.945 inches (24.000 mm) and discard thickness of 0.882 inches (22.400 mm)
• Outside diameter of 11.803 inches (299.800 mm) and overall height of 2.906 inches (73.800 mm)
• Five lug holes with a 4.724 inch (120.000 mm) bolt circle diameter

Details on the Centric GCX Elemental Protection Product Line

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line focuses on providing rotors with a comprehensive protective coating to resist rust and corrosion. The high carbon content enhances rotor strength and heat management, which helps maintain consistent braking performance under demanding conditions. This product line is designed to meet or exceed OEM specifications, making it suitable for BMW vehicles requiring reliable and long-lasting brake components.

Technical Specifications and Features

This vented disc brake rotor features a smooth surface finish and a fully coated disc and hat to protect against environmental damage. The rotor’s floating disc mounting system allows for slight movement to reduce stress and improve braking consistency. With a center hole diameter of 3.110 inches (79.000 mm) and five stud/lug holes sized at 0.579 inches (14.700 mm), it fits securely on compatible BMW hubs. The rotor weighs approximately 17.65 lbs (8.02 kgs), balancing durability and weight for optimal vehicle handling.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 120i, 125i, 128i, 320i, 325i, 325xi, 328i, and 328xi models
• Addresses brake noise and vibration caused by uneven rotor surfaces
• Helps prevent rust and corrosion that can reduce rotor lifespan
• Improves heat dissipation to reduce brake fade during extended use
• Restores braking performance for safer vehicle operation

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 0.882 inches (22.400 mm) before installation. Clean the hub surface thoroughly to prevent rotor runout. Use proper torque specifications for the five lug nuts on the 4.724 inch (120.000 mm) bolt circle. This rotor does not include bearings or an ABS tone ring, so verify compatibility with your vehicle’s braking system. Proper bedding-in of the new rotors and brake pads is recommended for optimal performance.

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM standards, ensuring consistent quality and performance. The full coating and high carbon content contribute to extended rotor life and reliable braking. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Refer to Centric’s official documentation for complete warranty information.