Centric 320.61109H Disc Brake Rotor - Rear

Centric GCX Rear Rotor Protection

Centric GCX Elemental Protection Disc Brake Rotor 320.61109H is a rear vented rotor built for 2015-2020 Ford Mustang applications, including Performance Package models. It combines a fully coated disc finish with Centric’s RS200 coating on non-mating surfaces to help resist rust and corrosion while maintaining OE-style braking dimensions.

For Ford Mustang rear brake service, this rotor uses a high carbon metallurgy profile and application-specific coating pattern to align with the vehicle’s brake pad friction type and OEM metallurgical requirements.

Key Features

• Part number: 320.61109H
• Fits 2015-2020 Ford Mustang, rear
• Fits 2015-2020 Ford Mustang, rear, Performance Package
• Fully coated disc finish with coated hat surface
• Vented rotor design with straight vanes
• Outside diameter: 12.992 in. / 330.0 mm
• Nominal thickness: 0.984 in. / 25.0 mm
• Discard thickness: 0.925 in. / 23.5 mm
• 5-lug pattern with 4.500 in. bolt circle
• Center hole diameter: 2.795 in. / 71.0 mm
• OEM vane count: 53

Detailed Description

Centric’s GCX Elemental Protection Disc Brake Rotors are engineered to match OE performance while adding corrosion resistance across the rotor’s non-mating surfaces. The full coating helps preserve appearance and reduce rust buildup on exposed areas, which is especially useful for rear brake rotors that see regular moisture and road contamination. Part number 320.61109H is built with a high carbon alloy formulation and application-specific coating pattern for the Ford Mustang rear axle.

Compatible With 2015-2020 Ford Mustang rear brake service, this rotor measures 12.992 inches in outside diameter, uses a vented construction, and features a floating disc mounting design. The smooth surface and coated hat finish support a clean installation appearance and OE-style fitment. If you are replacing worn rear rotors on a Mustang, 320.61109H provides the dimensional and material specifications needed for a direct-fit brake repair.

What It Helps Address

• Rear brake pulsation from rotor wear
• Rust and corrosion on exposed rotor surfaces
• Uneven braking feel caused by worn disc thickness
• Brake noise related to rotor surface condition
• Service replacement for Ford Mustang rear vented rotors

Installation Notes

Verify rotor dimensions, hub fitment, and rear brake configuration before installation. This rotor is for rear use only and is listed for vented rear disc applications, including Performance Package models. Clean the hub mounting surface thoroughly and inspect pads, calipers, and hardware condition before completing brake service. Part number 320.61109H should be matched to the vehicle’s rear brake setup before installation.

Quality Assurance

Centric develops GCX rotors with OE-style metallurgy and application-specific coating patterns to align with factory brake requirements. The brand states that its GCX coverage spans more than 1,000 SKUs and covers a large share of vehicles on the road today, supporting broad application accuracy for parts such as this Ford Mustang rear rotor.