Stoptech 128.44083L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.44083L is engineered for Lexus models including GS300, GS400, GS430, IS300, LS400, SC300, SC400, and SC430. Designed to enhance braking performance, this vented rotor features a cross-drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled surface for enhanced cooling and reduced brake fade
• Vented rotor design with straight vane style for efficient heat management
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for improved rotor alignment and performance
• Compatible with Lexus GS300, GS400, GS430, IS300, LS400, SC300, SC400, SC430
• Part number 128.44083L ensures exact fit and specifications

About StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to provide reliable braking performance under demanding conditions. Featuring a cross-drilled surface, these rotors improve airflow and heat dissipation, which helps maintain consistent brake pad contact and reduces the risk of brake fade. The vented design with straight vanes further enhances cooling efficiency. This rotor line is coated on the hat area to protect against rust and corrosion, ensuring durability over time.

Technical Specifications and Features

This disc brake rotor has a nominal thickness of 1.260 inches (32.000 mm) and a discard thickness of 1.181 inches (30.000 mm), providing a clear service limit for safe operation. The overall height measures 2.000 inches (50.800 mm), and the outside diameter is 11.650 inches (295.900 mm). It includes 5 stud/lug holes with a diameter of 0.571 inches (14.500 mm) and a mounting bolt hole circle diameter of 4.500 inches (114.300 mm). The center hole diameter is 2.441 inches (62.000 mm). Weighing approximately 20.8 lbs (9.45 kgs), this rotor balances durability and performance. Note that this rotor does not include ABS tone rings or bearings.

Common Applications and Problem Solving

• Reduces brake fade during aggressive driving or heavy braking
• Improves heat dissipation to prevent rotor warping
• Enhances braking response and consistency for Lexus GS and IS series
• Replaces worn or damaged rotors to restore factory braking performance
• Helps maintain brake system reliability under high-stress conditions

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Use proper torque specifications for mounting bolts to avoid rotor distortion
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Clean rotor surface before installation to remove any protective coatings or debris
• Check compatibility with vehicle ABS system as this rotor does not include an ABS tone ring

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet or exceed OEM specifications 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 verify warranty terms with the product supplier or manufacturer.