Stoptech 127.44127L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.44127L) are engineered for Lexus 4Runner and Toyota GX470 models. Designed to enhance braking performance, these rotors feature a vented, slotted, and cross-drilled surface to improve heat dissipation and maintain consistent stopping power under demanding conditions.

• Cross-drilled and slotted surface for improved heat dissipation and debris removal
• Vented rotor design with straight vane style for enhanced cooling
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better rotor alignment and reduced warping
• Compatible with Lexus 4Runner and Toyota GX470 models
• Nominal thickness of 1.083 inches (27.5 mm) and discard thickness of 1.024 inches (26 mm)
• Outside diameter of 13.307 inches (338 mm) and overall height of 2.654 inches (67.4 mm)
• 6 stud/lug holes with a diameter of 0.571 inches (14.5 mm) and mounting bolt hole circle diameter of 5.5 inches (139.7 mm)

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide enhanced braking performance through advanced rotor surface technology. The combination of cross-drilled holes and precision slots helps to reduce brake fade by improving heat dissipation and removing gas and debris from the pad surface. This product line is ideal for drivers seeking reliable braking performance on Lexus 4Runner and Toyota GX470 vehicles, especially under demanding driving conditions.

Technical Specifications and Features

This disc brake rotor features a vented design with straight vanes that promote airflow and cooling during braking. The rotor’s coated hat finish offers protection against rust and corrosion, extending the rotor’s service life. With a floating disc mounting system, the rotor allows for slight movement to reduce stress and minimize warping. The rotor measures 13.307 inches (338 mm) in outside diameter and has a nominal thickness of 1.083 inches (27.5 mm), with a discard thickness of 1.024 inches (26 mm), ensuring compliance with manufacturer specifications for safe operation.

Applications and Problem Solving

• Improves braking performance on Lexus 4Runner and Toyota GX470 models
• Reduces brake fade during extended or aggressive driving
• Minimizes rotor warping and vibration through floating disc design
• Helps prevent corrosion with coated hat finish
• Enhances pad bite and debris removal with slotted and cross-drilled surface

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (1.024 inches / 26 mm) before installation
• Verify compatibility with Lexus 4Runner and Toyota GX470 models prior to installation
• Use proper torque specifications for the 6 lug holes (14.5 mm diameter)
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Clean rotor surface before installation to remove any protective coatings or contaminants

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The rotors undergo rigorous quality control to ensure durability and consistent performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.