Centric 320.66056F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.66056F, is a front vented rotor built for direct-fit service on select Chevrolet Colorado, GMC Canyon, and Isuzu front brake applications. It uses a fully coated disc finish and coated hat to help resist corrosion while maintaining a smooth braking surface.

With an 11.024-inch outside diameter, 1.059-inch nominal thickness, and 1.008-inch discard thickness, this rotor is sized for the specified front axle fitments and uses a straight vane vented design. The 6-bolt pattern, 92.100 mm center hole diameter, and behind-the-hub mounting layout support proper alignment on the listed vehicles.

Key Features

• Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line
• Part number 320.66056F
• Fully coated disc finish with coated hat for added corrosion resistance
• Vented rotor with straight vane construction
• Smooth surface type for front brake service
• 6 mounting bolt holes with 112.000 mm bolt circle diameter
• Outside diameter: 11.024 in. / 280.000 mm
• Nominal thickness: 1.059 in. / 26.900 mm
• Discard thickness: 1.008 in. / 25.600 mm

Product Line Details

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line focuses on corrosion protection across the rotor face and hat area. For drivers maintaining front brake performance on Chevrolet Colorado and GMC Canyon models, this rotor line provides a coated replacement option that matches the listed dimensions and mounting specifications.

Vehicle Fitment

• Fits 2004-2008 Chevrolet Colorado, front
• Fits 2004-2008 GMC Canyon, front
• Fits 2007-2008 Isuzu i-290, front
• Fits 2007-2008 Isuzu i-370, front
• Fits 2006 Isuzu i-280, front
• Fits 2006 Isuzu i-350, front

What This Rotor Helps Address

• Front brake rotor wear that requires replacement at discard thickness
• Brake pulsation caused by rotor surface deterioration
• Corrosion on exposed rotor and hat surfaces
• Noise or uneven braking linked to worn front rotors
• Fitment issues when replacing the original vented front rotor

Installation Notes and Tips

Verify rotor dimensions, bolt pattern, center hole diameter, and front position before installation. Clean the hub mounting surface thoroughly so the behind-the-hub rotor seats flat, and inspect pads, calipers, and hardware condition during service. This part number, 320.66056F, is intended for the listed front applications only.

Quality Assurance

Centric designs this rotor with coated surfaces and application-specific dimensions for the listed vehicles. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.