Stoptech 127.44158L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (Part Number 127.44158L) is engineered for Lexus and Toyota vehicles, including the Highlander, NX200t, NX300, NX300h, RX350, RX450h, and Sienna models. Designed to enhance braking performance, this vented rotor features a coated hat finish and a floating disc mounting system for improved heat dissipation and durability.

• Cross-drilled and slotted surface for efficient heat and gas dissipation
• Vented rotor design with straight vane style to reduce brake fade
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion and reduced warping
• Compatible with Lexus and Toyota models including Highlander, NX series, RX series, and Sienna
• Disc dimensions: 12.913 inches (328 mm) outside diameter, 1.102 inches (28 mm) nominal thickness
• Mounting bolt circle diameter of 114.3 mm with 5 lug holes

Detailed Product Description

This StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (127.44158L) is designed to meet the specific braking requirements of select Lexus and Toyota vehicles. The rotor’s cross-drilled and slotted surface improves brake pad bite and helps evacuate gases and debris generated during braking. The vented rotor with straight vanes enhances airflow, reducing heat buildup and minimizing brake fade during demanding driving conditions.

The rotor features a coated hat finish that protects against rust and corrosion, ensuring long-term reliability. Its floating disc mounting system allows for slight movement between the rotor and hat, accommodating thermal expansion and reducing the risk of warping. With an outside diameter of 328 mm (12.913 inches) and a nominal thickness of 28 mm (1.102 inches), this rotor fits vehicles requiring these precise dimensions.

Applications and Problem Solving

• Improves braking performance on Lexus Highlander and Toyota Sienna models
• Reduces brake fade during extended or aggressive driving
• Minimizes rotor warping caused by thermal stress
• Enhances pad bite and braking consistency with slotted and drilled design
• Protects against corrosion for longer rotor service life

Installation Notes and Tips

• Ensure compatibility with vehicle make and model before installation
• Check rotor discard thickness of 0.984 inches (25 mm) to determine replacement timing
• Use proper torque specifications for the 5 lug holes with 4.5 mm diameter
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Verify absence of ABS tone ring as this rotor does not include one

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. The coated hat finish and vented design contribute to extended rotor life. Please refer to StopTech’s official warranty policy for coverage details related to defects and workmanship.