Centric GCX Front Brake Rotor Overview

Centric GCX Elemental Protection Disc Brake Rotor 320.34070H is a front vented rotor built for OE-style braking performance and corrosion resistance. It is a fitment-specific replacement for select BMW 5 Series models, including BMW 528i, BMW 528xi, BMW 528i xDrive, BMW 530i, BMW 530xi, BMW 535i xDrive, BMW 535xi, and BMW 525i applications.

The GCX Full Coating design uses Centrics RS200 finish on non-mating surfaces to help protect the rotor from rust while maintaining a clean appearance. This rotor also uses a high-carbon metallurgy profile to match OEM-style thermal and structural requirements for the vehicle platform.

Key Features

• Part number 320.34070H
• Front disc brake rotor for select BMW 5 Series applications
• Fully coated disc finish with coated hat for corrosion protection
• Vented rotor design with straight vane style
• Smooth friction surface for consistent pad contact
• High-carbon rotor metallurgy for OE-style performance
• 5-lug mounting pattern with 120 mm bolt circle
• 324 mm outside diameter and 30.0 mm nominal thickness

Product Line Details

Centrics GCX Elemental Protection rotor line is built around application-specific coating patterns and metallurgy selection. For this rotor family, the coating is applied to non-mating surfaces to help resist rust and corrosion, while the rotor material is matched to the vehicles OEM-style carbon content requirements for proper braking feel and durability.

Detailed Description

Centric 320.34070H is a front brake rotor engineered for BMW 5 Series vehicles that use a 324 mm vented front rotor. It measures 12.756 inches in outside diameter, 3.039 inches in overall height, and 1.181 inches nominal thickness, with a 1.118 inch discard thickness. The rotor features a 79 mm center hole, floating disc mounting, and straight internal vanes for heat management during repeated stops. This part cross-references Raybestos Brakes 980396FZN for the same application.

Use this rotor when servicing front brake systems on 2004-2007 BMW 530i, 2006-2007 BMW 530xi, 2004-2005 BMW 525i, 2006-2007 BMW 525xi, 2007 BMW 525i, 2008 BMW 528xi, 2008 BMW 535xi, 2008-2010 BMW 528i, 2009-2010 BMW 528i xDrive, and 2009-2010 BMW 535i xDrive models.

What This Rotor Helps Address

• Front brake pulsation caused by worn or uneven rotor surfaces
• Rust buildup on exposed rotor areas
• Reduced braking consistency from rotor wear beyond discard thickness
• Brake noise related to damaged or heat-affected rotors
• Service replacement needs on BMW 5 Series front brake systems

Installation Notes and Tips

Verify rotor diameter, thickness, center bore, and bolt pattern before installation. Inspect pads, calipers, and hub surfaces during brake service, and replace any worn components that could affect rotor performance. Clean the rotor friction surfaces before use and follow the vehicle manufacturers brake bedding procedure after installation.

Quality Assurance

Centric designs GCX rotors to align with OE performance targets while adding corrosion protection through its RS200 coating system. The high-carbon construction and application-specific coating pattern are intended to support consistent braking performance and long-term appearance on the vehicle.