Stoptech 127.44147L 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 127.44147L) is engineered for reliable braking performance on select Lexus, Scion, and Toyota vehicles. Designed to meet the demands of daily driving and spirited use, this rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for improved heat and gas dissipation
• Vented rotor design to reduce brake fade
• Coated hat finish for corrosion resistance
• Floating disc mounting for better thermal expansion management
• Compatible with Lexus HS250h, Scion xB, Toyota Prius V, and Toyota RAV4 models

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on performance-oriented rotors that combine cross-drilled holes and precision slots. This design enhances cooling and helps maintain clean pad surfaces, which is critical for consistent braking. The vented rotor construction further aids in heat management, making these rotors suitable for vehicles like the Lexus HS250h and Toyota RAV4 that require dependable braking under varied conditions.

Technical Specifications and Features

This disc brake rotor features a nominal thickness of 0.980 inches (24.9 mm) and a discard thickness of 0.866 inches (22.0 mm), ensuring a long service life before replacement is necessary. The rotor has an overall height of 1.827 inches (46.4 mm) and an outside diameter of 10.827 inches (275 mm), designed to fit specific brake assemblies. The rotor includes a floating disc mounting system and straight vane style for efficient airflow and heat dissipation. It has five stud/lug holes with a diameter of 0.571 inches (14.5 mm) and a mounting bolt hole circle diameter of 4.5 inches (114.3 mm). The hat finish is coated to resist corrosion, and the rotor weighs approximately 14.35 lbs (6.52 kgs). Note that this rotor does not include ABS tone rings or bearings.

Applications and Problem Solving

• Improves braking performance on Lexus HS250h, Scion xB, Toyota Prius V, and Toyota RAV4
• Reduces brake fade during extended or aggressive braking
• Helps prevent rotor warping caused by excessive heat buildup
• Maintains cleaner brake pad surfaces for consistent stopping power
• Provides corrosion resistance to extend rotor lifespan

Installation Notes and Tips

Ensure compatibility with your vehicle’s make and model before installation. The rotor is designed for floating disc mounting and requires proper torque on mounting bolts to avoid warping. Since this rotor does not include bearings or ABS tone rings, reuse existing components or source them separately if needed. Inspect brake pads and hardware during installation to ensure optimal performance.

Quality Assurance and Warranty

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet strict quality standards for durability and performance. The coated hat finish provides corrosion resistance to extend service life. Please refer to StopTech’s official warranty policy for specific coverage details related to this part number 127.44147L.