Centric 320.33138H Disc Brake Rotor - Front

Centric GCX Elemental Protection Disc Brake Rotors Overview

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content provide reliable braking performance for select Audi and Porsche models. Designed with a fully coated finish and high carbon content, these rotors offer enhanced durability and corrosion resistance for vehicles like the Audi A5, A6, A6 Quattro, A7 Quattro, S4, S5, and Porsche Macan and Q5.

• Part Number: 320.33138H
• Fully coated disc and hat finish for corrosion protection
• High carbon content for improved heat dissipation and reduced brake fade
• Vented rotor design with pillar-style vanes for efficient cooling
• Floating disc mounting for better rotor alignment and performance
• Nominal thickness: 30.000 mm (1.181 in), discard thickness: 28.000 mm (1.102 in)
• Outside diameter: 345.000 mm (13.583 in)
• 5 lug holes with 112.000 mm (4.409 in) bolt circle diameter
• Compatible with ABS systems (ABS tone ring not included)
• Weight: 11.56 kg (25.5 lbs)

About the Centric GCX Elemental Protection Product Line

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line focuses on delivering rotors with enhanced corrosion resistance and thermal performance. The full coating on both the disc and hat surfaces helps protect against rust and environmental damage, extending rotor life. The high carbon content improves heat dissipation, reducing the risk of brake fade during demanding driving conditions. This product line is engineered to meet or exceed OE specifications for fit, form, and function on compatible Audi and Porsche vehicles.

Detailed Product Description

This vented disc brake rotor features a smooth surface finish and pillar-style vanes that promote efficient airflow to maintain optimal operating temperatures. The floating disc mounting design allows for slight movement between the rotor and hat, which helps reduce stress and warping under heavy braking. With a nominal thickness of 30 mm and a discard thickness of 28 mm, the rotor maintains structural integrity throughout its service life. The fully coated finish on both the disc and hat surfaces provides a durable barrier against corrosion, making it suitable for vehicles exposed to harsh weather conditions.

Compatible Vehicles and Applications

• Designed for Audi A5, A6, A6 Quattro, A7 Quattro, S4, and S5 models
• Also compatible with Porsche Macan and Q5 models
• Ideal for replacing worn or damaged rotors to restore braking performance
• Addresses issues such as brake noise, vibration, and reduced stopping power
• Helps prevent rotor rust and corrosion in humid or salty environments

Installation Notes and Tips

Ensure the rotor thickness is within specifications before installation. The discard thickness is 28.000 mm (1.102 in), and the nominal thickness is 30.000 mm (1.181 in). Properly clean the hub surface and mounting area to prevent runout. Use the correct torque specifications for the 5 lug bolts on the 112 mm bolt circle. This rotor does not include bearings or an ABS tone ring, so verify compatibility with your vehicle’s braking system components.

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM standards for fit and performance. The high carbon content and full coating contribute to consistent braking and extended rotor life. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Always consult the product packaging or manufacturer for exact warranty terms.