Centric 320.34139H Disc Brake Rotor - Rear

Overview of Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotor 320.34139H is engineered for BMW X3 and X4 models, providing reliable braking performance with enhanced durability. Designed with a full coating and high carbon content, this rotor offers corrosion resistance and consistent stopping power.

• Full coating on disc and hat for corrosion protection
• High carbon content for improved heat dissipation and wear resistance
• Vented rotor design with straight vanes for efficient cooling
• Floating disc mounting for reduced stress and longer service life
• Compatible with BMW X3 and X4 models
• Part number 320.34139H for precise fitment

Product Line Features and Benefits

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating, High Carbon Content line focuses on delivering rotors that resist rust and corrosion through a complete coating process. This product line incorporates high carbon steel to enhance rotor strength and thermal conductivity, which helps maintain smooth braking performance under demanding conditions. The full coating on both the disc surface and hat extends the rotor's lifespan, making it suitable for BMW X3 and X4 vehicles that require dependable braking components.

Technical Specifications and Design Details

This disc brake rotor features a nominal thickness of 0.787 inches (20.000 mm) and a discard thickness of 0.724 inches (18.400 mm), ensuring it meets OEM standards for wear limits. The rotor has an outside diameter of 12.992 inches (330.000 mm) and an overall height of 2.795 inches (71.000 mm). It includes a 5-lug stud pattern with a mounting bolt hole circle diameter of 4.724 inches (120.000 mm) and a center hole diameter of 2.953 inches (75.000 mm). The rotor is vented with straight vanes to optimize heat dissipation during braking. The smooth surface finish and coated hat contribute to reduced corrosion and consistent brake pad contact. Weighing approximately 17 lbs (7.72 kgs), this rotor balances durability and performance for BMW X3 and X4 applications.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Upgrading corroded rotors to prevent rust-related braking issues
• Addressing uneven brake pad wear due to rotor surface imperfections
• Improving heat dissipation to reduce brake fade during extended use
• Ensuring proper fitment and performance on BMW X3 and X4 models

Installation Notes and Tips

When installing the Centric GCX Elemental Protection Disc Brake Rotor 320.34139H, ensure the rotor is compatible with your specific BMW X3 or X4 model year. Clean the hub surface thoroughly before mounting to prevent runout. Use proper torque specifications on the 5-lug studs to secure the rotor. Since this rotor does not include bearings or an ABS tone ring, verify compatibility with your vehicle’s existing components. It is recommended to replace brake pads simultaneously to maintain optimal braking performance.

Quality Assurance and Warranty

Centric provides rotors manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The full coating and high carbon content materials contribute to extended rotor life and corrosion resistance. While specific warranty details are not provided here, Centric products typically come with a limited warranty against defects in materials and workmanship. For exact warranty terms, consult the product documentation or Centric’s official resources.