Stoptech 128.44125R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor (part number 128.44125R) is engineered for reliable braking performance on select Lexus and Toyota vehicles. Designed to meet the demands of daily driving and spirited road use, this rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled surface for improved heat and gas dissipation
• Vented rotor design with straight vane style for efficient cooling
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion management
• Compatible with Lexus Avalon, ES300, IS250 and Toyota Camry, Sienna, Solara models
• Nominal thickness of 1.102 inches (28.000 mm) with discard thickness at 1.024 inches (26.000 mm)
• Outside diameter of 11.654 inches (296.000 mm) and overall height of 1.937 inches (49.200 mm)
• Five lug holes with a 4.5 inch (114.3 mm) bolt circle diameter

About StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line is designed to provide enhanced braking performance through improved heat management and reduced brake fade. The cross-drilled surface pattern allows for better ventilation and quicker heat dissipation, which is critical during aggressive driving or heavy braking conditions. The vented rotor design with straight vanes further aids in cooling, helping maintain consistent brake feel and performance. 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 features a floating disc mounting system that accommodates thermal expansion, reducing the risk of warping under high temperatures. The rotor's nominal thickness is 1.102 inches (28.000 mm), with a discard thickness of 1.024 inches (26.000 mm), indicating when replacement is necessary to maintain safe braking. The rotor measures 11.654 inches (296.000 mm) in outside diameter and has an overall height of 1.937 inches (49.200 mm). It includes five lug holes with a diameter of 0.581 inches (14.750 mm) arranged on a 4.5 inch (114.3 mm) bolt circle diameter. The rotor weighs approximately 17 lbs (7.73 kgs) and does not include ABS tone rings or bearings.

Compatible Vehicles and Applications

This StopTech rotor is compatible with a range of Lexus and Toyota models, including:

• Lexus Avalon
• Lexus ES300
• Lexus IS250
• Toyota Camry
• Toyota Sienna
• Toyota Solara

It is designed to replace factory rotors on these vehicles, providing improved heat dissipation and braking consistency.

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during heavy braking
• Warping or uneven rotor wear due to thermal stress
• Corrosion and rust on rotor hats affecting longevity
• Reduced braking performance from gas buildup between pad and rotor
• Inconsistent brake pedal feel under demanding driving conditions

Installation Notes and Tips

• Ensure rotor thickness is within discard limits before installation
• Use proper torque specifications for lug nuts to avoid rotor distortion
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Clean rotor surface with brake cleaner before installation to remove any contaminants
• Verify 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 service life. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.