Centric 320.66005F Disc Brake Rotor - Front

Overview of Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating provide reliable braking performance for Chevrolet and GMC trucks and SUVs. Designed with a fully coated finish, these rotors offer enhanced corrosion resistance and durability for long-term use.

• Part Number: 320.66005F
• Fully coated disc and hat finish for corrosion protection
• Vented rotor design with straight vane style for improved heat dissipation
• Nominal thickness of 1.291 inches (32.800 mm) and discard thickness of 1.215 inches (30.860 mm)
• Compatible with Chevrolet and GMC models including C20, C2500, C3500, Suburban, G30, P20, P30, R20, and R2500 series
• Outside diameter of 12.5 inches (317.5 mm) and overall height of 4.764 inches (121.0 mm)
• Eight stud/lug holes with 0.563 inch stud thread diameter and 6.5 inch bolt circle diameter

Product Line Details: Centric GCX Elemental Protection Disc Brake Rotors - Full Coating

The Centric GCX Elemental Protection line focuses on providing disc brake rotors with a full coating to protect against rust and corrosion. This coating extends the rotor's service life, especially in harsh environments where moisture and road salt are common. The full coating covers both the braking surface and the hat area, ensuring comprehensive protection without compromising braking performance.

Technical Specifications and Features

This vented disc brake rotor features a smooth surface type and straight vane style to optimize airflow and heat dissipation during braking. The rotor's nominal thickness is 1.291 inches (32.800 mm), with a discard thickness of 1.215 inches (30.860 mm), indicating when replacement is necessary. The rotor weighs approximately 38.6 lbs (17.55 kgs), suitable for heavy-duty applications. It includes eight stud holes with a 0.563 inch thread diameter and a 6.5 inch mounting bolt hole circle diameter, designed for secure fitment on compatible Chevrolet and GMC trucks and SUVs.

Compatible Vehicles and Applications

• Chevrolet C20, C20 Suburban, C30, C2500, C2500 Suburban, C3500
• GMC G30, P20, P30, P2500, P3500, R20, R20 Suburban, R2500, R2500 Suburban

This rotor is intended for use in heavy-duty braking systems on these models, providing consistent stopping power and durability.

Common Issues Addressed by This Rotor

• Brake rotor corrosion and rust buildup
• Overheating and brake fade due to insufficient heat dissipation
• Warped or uneven rotor surfaces causing vibration
• Reduced braking efficiency from worn or thin rotors
• Compatibility issues with OEM brake components

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean mounting surfaces to prevent uneven rotor seating
• Torque lug nuts to manufacturer specifications for secure fitment
• Check compatibility with existing brake pads and hardware
• Inspect bearings and seals (inner bearing #410.91035, outer bearing #415.66000) during installation

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM specifications, ensuring reliable performance and fitment. The full coating process protects against corrosion, extending rotor life. While specific warranty details are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship.