Centric 320.34029H Disc Brake Rotor - Front

Overview of Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content offer reliable braking performance for select BMW models. Designed with a fully coated finish and high carbon content, these rotors provide enhanced durability and corrosion resistance.

• Part Number: 320.34029H
• Fully coated disc and hat finish for corrosion protection
• High carbon content for improved wear resistance and heat dissipation
• Vented rotor design with straight vanes for efficient cooling
• Nominal thickness: 0.862 inches (21.900 mm)
• Discard thickness: 0.803 inches (20.400 mm)
• Outside diameter: 11.260 inches (286.000 mm)
• Overall height: 2.035 inches (51.700 mm)
• Floating disc mounting with 5 lug holes (0.591 inch diameter)
• Smooth surface type for consistent pad contact

Product Line Details

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line focuses on delivering rotors with enhanced elemental protection through a full coating process. This coating helps prevent rust and corrosion, extending rotor life especially in environments prone to moisture and road salt. The high carbon content improves rotor strength and heat management, making these rotors suitable for daily driving and moderate performance demands.

Detailed Product Description

This disc brake rotor is engineered for compatibility with various BMW models including the 318i, 318is, 318ti, 320i, 323Ci, 323i, 323is, 325i, 325is, 328i, 328is, Z3, and Z4. The vented rotor design with straight vanes enhances heat dissipation during braking, reducing the risk of brake fade. The fully coated disc and hat finish provide a protective barrier against corrosion, which is critical for maintaining rotor integrity over time. The floating disc mounting and smooth surface ensure consistent brake pad contact and reliable stopping power. With a nominal thickness of 0.862 inches and discard thickness of 0.803 inches, this rotor meets OEM specifications for safe and effective braking.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Corrosion damage repair due to exposure to road salt or moisture
• Improved heat dissipation to reduce brake fade during extended use
• Restoring proper rotor thickness for safe braking performance
• Upgrading to a coated rotor for longer service life in harsh conditions

Installation Notes and Tips

Ensure the rotor is installed on compatible BMW models listed in the fitment section. Verify rotor thickness before installation to confirm it meets minimum discard thickness specifications. Use proper torque settings on the 5 lug bolts (0.591 inch diameter) and inspect brake pads for wear during rotor replacement. The floating disc mounting requires correct alignment to avoid uneven wear. It is recommended to replace rotors in pairs for balanced braking performance.

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The full coating process provides additional protection against corrosion, contributing to longer rotor life. While specific warranty details are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Always consult product documentation or manufacturer resources for exact warranty terms.