Stoptech 127.44122R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.44122R) are engineered for Lexus LS430 models requiring reliable and consistent braking performance. These vented rotors feature a slotted and cross-drilled surface designed to improve heat dissipation and maintain optimal brake pad contact.

• Compatible with Lexus LS430
• Part Number: 127.44122R
• Vented disc brake rotor with cross-drilled and slotted surface
• Coated hat finish for corrosion resistance
• Overall diameter: 315 mm (12.402 inches)
• Nominal thickness: 30.000 mm (1.181 inches)
• Discard thickness: 28.000 mm (1.102 inches)
• Floating disc mounting with straight vane style
• 5 lug holes with 114.3 mm (4.5 inches) bolt circle diameter
• Weight approximately 9.66 kg (21.25 lbs)

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to enhance braking efficiency through improved heat management and debris removal. The combination of cross-drilled holes and precision slots helps reduce brake fade and maintain consistent pad bite under demanding conditions. This product line is suitable for drivers seeking a balance between performance and durability, particularly for vehicles like the Lexus LS430 that benefit from upgraded braking components.

Technical Specifications and Features

This disc brake rotor features a vented design with straight vanes to optimize airflow and cooling during braking. The rotor's surface is cross-drilled and slotted to aid in gas and dust evacuation, which helps maintain clean pad contact and reduces the risk of glazing. The coated hat finish provides corrosion resistance, extending the rotor's service life. The rotor mounts using a floating disc system and includes two miscellaneous holes for additional mounting or sensor compatibility. It has a center hole diameter of 62 mm (2.441 inches) and five lug holes sized at 14.5 mm (0.571 inches) diameter, arranged on a 114.3 mm (4.5 inches) bolt circle diameter.

Common Applications and Problem Solving

• Improves braking performance for Lexus LS430 vehicles
• Reduces brake fade during extended or aggressive driving
• Helps prevent rotor warping caused by excessive heat
• Minimizes brake dust buildup on rotor surface
• Enhances pad bite consistency in wet or dusty conditions

Installation Notes and Tips

• Ensure compatibility with Lexus LS430 before installation
• Check rotor thickness and discard limits prior to mounting
• Use proper torque specifications for lug nuts on the 5-lug pattern
• Inspect brake pads for wear and replace if necessary during rotor installation
• Follow manufacturer guidelines for bedding-in new rotors and pads

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The coated hat finish provides additional protection against corrosion, contributing to long-term durability. 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 consult the product documentation or StopTech directly for exact warranty terms.