Centric 128.34170 Disc Brake Rotor - Front Left

Overview of Centric Premium OE Style Cross-Drilled Disc Brake Rotors

The Centric Premium OE Style Cross-Drilled Disc Brake Rotor 128.34170 is engineered for precise fitment and reliable braking performance on select BMW models. Designed specifically for BMW 330Ci, 330i, and Z4 vehicles, this rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled surface for improved heat dissipation and reduced brake fade
• Vented rotor design to maintain optimal operating temperatures
• Coated hat finish to resist corrosion and extend rotor life
• 5 bolt hole pattern with a 120 mm bolt circle diameter for exact fitment
• Nominal thickness of 25 mm and discard thickness of 23.4 mm for durability and safety
• Floating disc mounting for better rotor alignment and performance
• Compatible with BMW 330Ci, 330i, and Z4 models

Product Line Details

The Centric Premium OE Style Cross-Drilled Disc Brake Rotors line focuses on delivering rotors that meet or exceed original equipment specifications. This product line features cross-drilled rotors designed to improve braking efficiency by enhancing heat dissipation and reducing brake fade. The rotors are vented and coated to provide durability and corrosion resistance, making them suitable for performance-oriented BMW vehicles such as the 330Ci, 330i, and Z4.

Technical Specifications and Features

This disc brake rotor has an outside diameter of 325 mm (12.795 inches) and an overall height of 52.8 mm (2.079 inches). The nominal thickness is 25 mm (0.984 inches), with a discard thickness of 23.4 mm (0.921 inches), ensuring safe replacement intervals. The rotor features a 5-lug bolt hole pattern with a 120 mm (4.724 inches) bolt circle diameter and a center hole diameter of 79 mm (3.110 inches). The hat is coated to resist corrosion, and the rotor uses a floating disc mounting system to maintain proper alignment during operation. This rotor does not include ABS tone rings or bearings.

Applications and Problem Solving

• Replaces worn or warped rotors on BMW 330Ci, 330i, and Z4 models
• Addresses brake fade caused by excessive heat during aggressive driving
• Improves braking performance and pedal feel with cross-drilled design
• Prevents corrosion-related rotor damage with coated hat finish
• Ensures proper rotor alignment and longevity with floating disc mounting

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 23.4 mm before installation. Clean the hub surface to remove rust or debris for proper rotor seating. Use the correct torque specifications for the 5-lug bolt pattern with a 120 mm bolt circle diameter. Since this rotor does not include bearings or ABS tone rings, reuse existing components if applicable. It is recommended to replace brake pads simultaneously for optimal braking performance.

Quality Assurance and Warranty

Centric Premium OE Style Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided, Centric products typically come with a limited warranty against defects in materials and workmanship. Always verify warranty terms with the product documentation or supplier.