Stoptech 127.44083L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor 127.44083L 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 slotted and drilled surface for improved heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for better heat and gas dissipation
• Vented rotor design with straight vane style for efficient cooling
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with Lexus GS300, GS400, GS430, IS300, LS400, SC300, SC400, SC430
• Floating disc mounting for improved rotor alignment and performance
• Overall diameter: 295.9 mm (11.65 inches)
• Nominal thickness: 32.0 mm (1.260 inches), discard thickness: 30.0 mm (1.181 inches)
• 5 lug holes with 114.3 mm (4.5 inches) bolt circle diameter
• Part number 127.44083L for precise identification

Detailed Product Description

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are designed to meet the demands of performance-oriented Lexus vehicles such as the GS300, GS400, GS430, IS300, LS400, SC300, SC400, and SC430. This rotor features a vented design with straight vanes that promote effective airflow, reducing heat buildup during braking. The cross-drilled and slotted surface helps evacuate gases, dust, and water, maintaining consistent brake pad contact and improving overall braking response.

The rotor’s coated hat finish provides corrosion resistance, which is essential for maintaining rotor integrity over time. With a floating disc mounting system, the rotor allows slight movement to reduce stress and improve alignment, contributing to smoother braking performance. The rotor measures 295.9 mm in outside diameter and has a nominal thickness of 32.0 mm, with a discard thickness of 30.0 mm, ensuring it meets OEM specifications for safe operation.

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is engineered for drivers seeking enhanced braking performance and durability. This product line combines cross-drilled holes and precision slots to improve heat dissipation and reduce brake fade under demanding conditions. The vented rotor design with straight vanes further supports cooling efficiency, making it suitable for both street and light track use. The 127.44083L rotor is a part of this line, tailored specifically for select Lexus models to maintain OEM fitment and performance standards.

Common Applications and Problem Solving

• Reduces brake fade caused by excessive heat buildup
• Improves wet weather braking by channeling water away from the rotor surface
• Minimizes brake dust accumulation for cleaner braking components
• Addresses rotor warping issues through improved cooling and floating mount design
• Enhances brake pad bite and overall stopping power for Lexus GS and IS series vehicles

Installation Notes and Tips

• Ensure compatibility with Lexus GS300, GS400, GS430, IS300, LS400, SC300, SC400, and SC430 before installation
• Check rotor thickness and discard thickness to confirm safe usage
• Use proper torque specifications for the 5 lug bolts on the 114.3 mm bolt circle diameter
• Inspect brake pads and calipers during installation for optimal performance
• Break in new rotors and pads according to manufacturer recommendations to ensure proper bedding

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The 127.44083L rotor undergoes 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. Always refer to the product packaging or StopTech’s official documentation for exact warranty terms.