Stoptech 128.44083R Disc Brake Rotor - Front Right

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotors (Part Number 128.44083R) are engineered for Lexus models including GS300, GS400, GS430, IS300, LS400, SC300, SC400, and SC430. These rotors provide reliable braking performance with a vented design and cross-drilled surface to enhance heat dissipation and reduce brake fade.

• Cross-drilled surface for improved heat dissipation
• Vented rotor design to maintain optimal braking temperatures
• Coated hat finish for corrosion resistance
• Floating disc mounting for better rotor alignment
• Compatible with Lexus GS300, GS400, GS430, IS300, LS400, SC300, SC400, SC430
• Nominal thickness of 1.260 inches (32.000 mm) with discard thickness at 1.181 inches (30.000 mm)
• Overall diameter of 11.650 inches (295.900 mm) and height of 2.000 inches (50.800 mm)
• Five lug holes with 0.571 inch (14.500 mm) diameter and 4.500 inch (114.300 mm) bolt circle diameter

Detailed Product Description

The StopTech Sport Cross-Drilled Disc Brake Rotors are designed to meet the braking demands of various Lexus vehicles, including the GS, IS, LS, and SC series. Featuring a vented rotor construction, these rotors allow air to flow between the rotor faces, helping to dissipate heat more effectively during heavy braking. The cross-drilled surface pattern further aids in heat reduction and helps to evacuate gases and debris from the braking surface, improving overall brake response and consistency.

The rotor’s hat is coated to resist corrosion, extending the service life and maintaining a clean appearance. The floating disc mounting design allows for slight movement between the rotor and hub, which helps reduce stress and warping under high thermal loads. With a nominal thickness of 1.260 inches (32.000 mm) and a discard thickness of 1.181 inches (30.000 mm), these rotors provide a balance between durability and performance.

StopTech Sport Cross-Drilled Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled Disc Brake Rotors line focuses on delivering enhanced braking performance through advanced rotor surface technology and vented designs. This product line is tailored for drivers seeking improved heat management and consistent brake feel without compromising OEM fitment. The cross-drilled pattern and vented construction work together to reduce brake fade and maintain stopping power during spirited driving or demanding conditions.

Common Applications and Problem Solving

• Reduces brake fade during aggressive or repeated braking
• Improves heat dissipation to prevent rotor warping
• Minimizes brake dust and gas buildup on rotor surface
• Enhances braking consistency for Lexus GS300, IS300, and LS400 models
• Provides corrosion resistance for longer rotor life

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Use proper torque specifications for the 5 lug bolts (14.500 mm diameter)
• Check compatibility with ABS systems; this rotor does not include an ABS tone ring
• Inspect brake pads and calipers for wear when replacing rotors
• Follow manufacturer’s break-in procedure for optimal rotor performance

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet strict quality standards for fitment and performance on specified Lexus models. The coated hat finish and vented design contribute to durability and corrosion resistance. 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 documentation or manufacturer.