Stoptech 128.34044R Disc Brake Rotor - Rear Right

Overview of StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors (part number 128.34044R) are engineered for BMW 320i, 323Ci, 323i, and 328i models. These rotors provide reliable braking performance with a vented, cross-drilled design that supports heat dissipation and consistent stopping power.

• Cross-drilled surface for improved heat dissipation and reduced brake fade
• Vented rotor design enhances cooling during heavy braking
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with BMW 320i, 323Ci, 323i, and 328i models
• Part number 128.34044R ensures precise fitment and quality
• Floating disc mounting with straight vane style for balanced performance
• Outside diameter of 276 mm (10.866 inches) and overall height of 60 mm (2.362 inches)

Product Line Details: StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line focuses on performance-oriented rotors designed to improve braking efficiency and thermal management. The cross-drilled surface pattern helps to dissipate heat and gases generated during braking, while the vented rotor design promotes airflow to maintain optimal operating temperatures. This product line is suitable for drivers seeking enhanced brake response and durability on BMW vehicles such as the 320i, 323Ci, 323i, and 328i.

Technical Specifications and Features

These rotors feature a nominal thickness of 19.0 mm (0.748 inches) and a discard thickness of 17.4 mm (0.685 inches), ensuring a clear service limit for safe operation. The rotor includes a coated hat finish to protect against rust and corrosion. The center hole diameter measures 75 mm (2.953 inches), and the mounting bolt hole circle diameter is 120 mm (4.724 inches) with five lug holes sized at 14.6 mm (0.575 inches). The rotor weighs approximately 5.6 kg (12.31 lbs), balancing durability and weight for effective braking performance.

Common Applications and Problem Solving

• Reduces brake fade during aggressive driving or heavy braking conditions
• Improves heat dissipation to prevent rotor warping and extend service life
• Enhances braking response for BMW 320i, 323Ci, 323i, and 328i models
• Addresses corrosion issues with coated hat finish for longer rotor durability
• Provides consistent braking performance under varied driving conditions

Installation Notes and Tips

• Ensure compatibility with BMW 320i, 323Ci, 323i, and 328i before installation
• Inspect rotor thickness and discard limits to confirm suitability for replacement
• Use proper torque specifications for the 5 lug bolts to avoid mounting issues
• Check for ABS tone ring compatibility; this rotor does not include an ABS tone ring
• Clean rotor surface before installation to remove any protective coatings or residues

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet OEM standards for fitment and performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty covering defects in materials and workmanship. It is recommended to verify warranty terms with the point of purchase or manufacturer documentation.