Centric 320.66063F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor for OE-Style Performance

Centric GCX Elemental Protection Disc Brake Rotor, part number 320.66063F, is built for front brake service on select Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, Buick Rainier, and Chevrolet SSR applications. It combines a fully coated finish with OE-matched metallurgy to support consistent braking performance and corrosion resistance.

Key Features

• Fully coated disc finish with Centric RS200 protection on non-mating surfaces
• Coated hat finish for added resistance to rust and corrosion
• Vented rotor design with smooth surface type
• Application-specific coating pattern matched to brake pad friction type
• OE-profile metallurgy using high-carbon alloy formulations
• Front position fitment for select 2006-2009 Chevrolet Trailblazer and GMC Envoy models
• Part number 320.66063F for direct catalog identification

Product Details

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line is engineered to mirror original equipment performance while adding long-term surface protection. This rotor uses a vented construction, a 302 mm outside diameter, a 79.2 mm center hole diameter, and a 5-lug, 127 mm bolt circle layout. The floating disc mounting design and straight vane style support stable front brake operation in the listed applications. Centric also uses metallurgy matched to OEM-style requirements, helping maintain the correct rotor profile for vehicles such as the Chevrolet Trailblazer and GMC Envoy. If you are searching for a front brake rotor for a 2006-2009 Chevrolet Trailblazer, 2006-2009 GMC Envoy, or 2007-2008 Isuzu Ascender, part number 320.66063F is the catalog reference to use.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Rotor Helps Address

• Brake pulsation caused by worn or uneven rotor surfaces
• Rust buildup on exposed rotor areas
• Corrosion on the hat and non-mating surfaces
• Reduced braking consistency from rotor wear
• Fitment issues when replacing a front rotor on listed GM and Isuzu platforms

Installation Notes and Tips

Verify rotor dimensions, hub fit, and bolt pattern before installation. Clean the hub mounting surface thoroughly so the floating mount seats evenly, and inspect pads and calipers for wear before installing the new rotor. Because this rotor is vented and application-specific, confirm front position fitment for your exact vehicle year and model before ordering. For search reference, this rotor fits 2006-2009 Chevrolet Trailblazer, front; 2006-2009 GMC Envoy, front; 2007-2008 Isuzu Ascender, front; 2006-2007 Buick Rainier, front; and 2006 Chevrolet SSR, front.

Quality Assurance

Centric designs the GCX line to align with OE performance targets and uses coated surfaces to help protect against rust and corrosion over the service life of the rotor. The brand’s application-specific coating pattern and OEM-matched metallurgy are intended to support consistent fit and finish across the listed front brake applications.