Stoptech 127.44131L Disc Brake Rotor - Rear Left

Overview of StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.44131L) are engineered for Lexus and Toyota vehicles, including the Highlander, RX330, RX350, and RX400h models. Designed to enhance braking performance, these rotors feature a solid construction with a coated hat finish for durability and corrosion resistance.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Solid rotor design with a coated hat finish to resist corrosion
• Nominal thickness of 10.000 mm and discard thickness of 8.500 mm
• Overall diameter of 288.000 mm (11.339 inches) for precise fitment
• Five lug holes with a 114.3 mm bolt circle diameter
• Center hole diameter of 62.000 mm (2.441 inches)
• Weight approximately 11.5 lbs (5.23 kgs)
• Does not include ABS tone ring or bearings

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide enhanced braking performance through improved heat management and pad bite. The cross-drilled holes and slots help reduce brake fade by allowing gases and debris to escape, while the solid rotor construction ensures consistent braking feel. The coated hat finish adds protection against rust, making these rotors suitable for daily driving and spirited use on compatible Lexus and Toyota models.

Technical Specifications and Features

This disc brake rotor features a solid design with a nominal thickness of 10.000 mm and a discard thickness of 8.500 mm, ensuring a long service life before replacement is necessary. The rotor’s overall diameter measures 288.000 mm (11.339 inches), matching factory specifications for the Lexus Highlander and Toyota RX series. The five lug holes with a 114.3 mm bolt circle diameter and 14.5 mm stud hole diameter provide secure mounting. The rotor’s hat is coated to resist corrosion, extending the rotor’s durability in various driving conditions.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Lexus Highlander, RX330, RX350, and RX400h
• Improves braking performance by reducing heat buildup and brake fade
• Helps eliminate brake noise and vibration caused by uneven rotor surfaces
• Prevents rust and corrosion on rotor hats for longer service intervals
• Maintains proper rotor thickness for safe and effective braking

Installation Notes and Tips

• Ensure compatibility with your vehicle’s make and model before installation
• Check rotor thickness and discard limits to confirm replacement necessity
• Use proper torque specifications for lug nuts to avoid rotor warping
• Inspect brake pads and replace if worn to maximize rotor performance
• Clean rotor surface before installation to remove any protective coatings or debris

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & 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, contributing to the rotor’s longevity. While specific warranty details are not provided, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.