Stoptech 126.44166SL Disc Brake Rotor - Rear Left

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.44166SL) are engineered for Lexus and Toyota vehicles, including the Highlander, RX350, RX450h, and Sienna models. These rotors provide reliable braking performance with a slotted surface design to enhance pad bite and heat dissipation.

• Compatible with Lexus Highlander, RX350, RX450h, and Toyota Sienna
• Part Number: 126.44166SL
• Slotted surface type for improved braking response
• Solid rotor construction with coated hat finish for corrosion resistance
• Outside diameter: 12.165 inches (309 mm)
• Nominal thickness: 0.394 inches (10.000 mm)
• Discard thickness: 0.335 inches (8.500 mm)
• 5 lug holes with 4.5 inch (114.3 mm) bolt circle diameter
• Center hole diameter: 2.441 inches (62 mm)
• Weight approximately 13.3 lbs (6.05 kg)

About StopTech Sport Slotted Disc Brake Rotors

The StopTech Sport Slotted Disc Brake Rotors line is designed to offer enhanced braking performance through improved heat dissipation and pad bite. The slotted surface helps to evacuate gases and debris from the rotor-pad interface, reducing brake fade during demanding driving conditions. This product line focuses on solid rotors with a coated hat finish to resist corrosion and extend rotor life, making it suitable for daily driving and light performance applications.

Technical Specifications and Features

These rotors feature a solid disc design with a nominal thickness of 0.394 inches (10.000 mm) and a discard thickness of 0.335 inches (8.500 mm), ensuring durability and consistent braking performance. The overall height measures 2.469 inches (62.7 mm), and the outside diameter is 12.165 inches (309 mm), matching OEM specifications for proper fitment. The rotor includes five lug holes with a 4.5 inch (114.3 mm) bolt circle diameter and a center hole diameter of 2.441 inches (62 mm). The hat is coated to protect against rust and corrosion, maintaining rotor integrity over time. Note that these rotors do not include ABS tone rings or bearings.

Applications and Problem Solving

• Replacement for worn or warped rotors on Lexus Highlander, RX350, RX450h, and Toyota Sienna
• Improves braking response and reduces brake fade under moderate performance driving
• Addresses rotor corrosion issues with coated hat finish
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Suitable for vehicles requiring solid, slotted rotors for enhanced pad bite

Installation Notes and Tips

Ensure compatibility with your specific Lexus or Toyota model before installation. These rotors are designed for vehicles with five lug nuts and a 4.5 inch bolt circle diameter. Proper torque specifications should be followed when mounting the rotors. Since these rotors do not include bearings or ABS tone rings, reuse existing components or replace separately if necessary. It is recommended to replace brake pads simultaneously to ensure optimal braking performance.

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The coated hat finish provides additional corrosion resistance to extend rotor life. 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.