Stoptech 128.40056L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.40056L is engineered for Acura and Honda vehicles, including the Civic, CR-Z, and RSX models. Designed to enhance braking performance, this rotor features a vented, cross-drilled surface to improve heat dissipation and reduce brake fade under demanding conditions.

• Cross-drilled surface for improved heat dissipation
• Vented rotor design to maintain optimal operating temperatures
• Coated hat finish for corrosion resistance
• Floating disc mounting for better rotor alignment
• Compatible with Acura and Honda Civic, CR-Z, and RSX models
• Part number 128.40056L for precise fitment

StopTech Sport Cross-Drilled Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled Disc Brake Rotors line focuses on performance-oriented rotors that combine enhanced cooling features with durability. The cross-drilled design helps to evacuate gases and water from the rotor surface, while the vented construction promotes airflow to reduce heat buildup. This product line is suitable for drivers seeking improved braking consistency and rotor longevity on Acura and Honda vehicles.

Technical Specifications and Features

This disc brake rotor has a nominal thickness of 0.827 inches (21.000 mm) and a discard thickness of 0.748 inches (19.000 mm), ensuring a reliable service life before replacement is necessary. The rotor's outside diameter measures 10.295 inches (261.500 mm), with an overall height of 1.850 inches (47.000 mm). It features a coated hat finish to resist corrosion and a floating disc mounting system that allows for slight movement to reduce stress and improve braking performance. The rotor includes a 5-lug hole pattern with a 4.500 inch (114.300 mm) bolt circle diameter and stud/lug holes sized at 0.496 inches (12.600 mm). The vane style is straight, which aids in consistent airflow through the rotor for cooling. Weighing approximately 11.5 lbs (5.22 kgs), this rotor balances durability and weight for effective braking.

Applications and Problem Solving

• Reduces brake fade during aggressive driving or track use
• Improves heat dissipation to prevent rotor warping
• Enhances braking response and pedal feel on Acura and Honda Civic, CR-Z, and RSX
• Resists corrosion with coated hat finish for longer service life
• Compatible with vehicles requiring a 5-lug, 4.5-inch bolt circle rotor

Installation Notes and Tips

• Ensure compatibility with your specific Acura or Honda model before installation
• Check rotor thickness and discard thickness to confirm replacement timing
• Use proper torque specifications on lug nuts to avoid rotor damage
• Inspect brake pads and calipers during installation for optimal performance
• Floating disc mounting requires correct alignment for best results

Quality Assurance and Warranty

StopTech Sport 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 here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always refer to the manufacturer’s warranty documentation for complete coverage information.