Centric 320.34029F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.34029F, is a front vented rotor built for BMW applications that call for a 286 mm outside diameter and 5-lug mounting pattern. Its fully coated disc finish and coated hat help protect exposed surfaces, while the smooth surface type supports consistent brake pad contact.

Compatible With BMW 318i, 318is, 318ti, 320i, 323Ci, 323i, 323is, 325i, 325is, 328i, 328is, Z3, and Z4 front brake applications, this rotor is sized for direct replacement use on the listed vehicles. The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line is built for drivers who want a coated rotor finish that addresses corrosion exposure on the hat and disc surfaces.

Key Features

• Part number 320.34029F
• Front disc brake rotor for BMW fitments listed below
• Fully coated disc finish with coated hat finish
• Vented rotor design with straight vane style
• Smooth friction surface for pad contact
• Outside diameter: 11.260 in. / 286.000 mm
• Nominal thickness: 0.862 in. / 21.900 mm
• Discard thickness: 0.803 in. / 20.400 mm
• 5 lug holes with 120.000 mm bolt circle diameter
• Floating disc mounting and 79.000 mm center hole diameter

Product Details

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line focuses on corrosion protection across the rotor surfaces that are most exposed during service. On BMW 318i, 325i, 328i, Z3, and Z4 front brake setups, the coated finish helps preserve the rotor appearance and reduce surface rust on the hat and disc areas. The vented construction and straight vane layout support heat management during repeated braking, while the smooth face is suited to normal pad bedding and everyday stopping performance.

This rotor measures 2.035 in. overall height and uses a floating mounting design with one miscellaneous hole and no ABS tone ring. If you are replacing worn front rotors on a BMW 323Ci, 323i, or 328is, 320.34029F provides the dimensional and bolt-pattern details needed for the listed applications.

Used For

• Replacing worn front brake rotors on BMW 318i, 318is, 318ti, and 320i models
• Addressing brake pulsation caused by rotor wear or thickness loss
• Restoring braking surface condition after scoring or uneven pad contact
• Reducing visible corrosion on exposed rotor surfaces
• Maintaining proper front brake fitment on listed BMW applications

Installation Notes

Verify rotor dimensions, hub fit, and bolt pattern before installation. This front rotor uses a 5-lug, 120 mm bolt circle and a 79 mm center hole diameter, so matching the vehicle hub and caliper setup is important. Some 1992 BMW 318i and 318is applications require front caliper compatibility for vehicles manufactured from November 1991 onward, and the 2006 BMW Z4 listing applies to vehicles built to 1/06.

For fitment reference, this rotor fits 1992 BMW 318i, front; 1992 BMW 318is, front; 1993-1999 BMW 318i, front; 1993-1999 BMW 318is, front; 1999 BMW 318ti, front; 1998-1999 BMW 323is, front; 1998-2000 BMW 323i, front; 2000 BMW 323Ci, front; 1996-1999 BMW 328i, front; 1996-1999 BMW 328is, front; 1992-1995 BMW 325i, front; 1992-1995 BMW 325is, front; 1993-1995 BMW 320i, front; 2001-2005 BMW 320i, front; 1997-2002 BMW Z3, front; 2003-2005 BMW Z4, front; and 2006 BMW Z4, front to 1/06.

Quality Assurance

Centric designs the GCX Elemental Protection Disc Brake Rotors line around coated rotor surfaces and application-specific dimensions for BMW front brake service. Part number 320.34029F is built to match the listed fitments and dimensional requirements for direct replacement use.