Stoptech 127.44128L Disc Brake Rotor - Rear Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.44128L) are engineered for reliable braking performance on Lexus and Toyota vehicles. Designed specifically for models like the 4Runner, FJ Cruiser, GX470, and Sequoia, these rotors offer enhanced heat dissipation and consistent stopping power under demanding conditions.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Vented rotor design to reduce brake fade during extended use
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with 6-lug wheel configurations and floating disc mounting
• Precision dimensions: 312 mm outside diameter, 18 mm nominal thickness, and 68.1 mm overall height

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 slots to optimize braking efficiency. This design helps maintain cooler rotor temperatures and removes debris from the pad surface, which is critical for vehicles like the Toyota 4Runner and Lexus GX470 that may encounter varied driving conditions. The vented rotor construction further supports heat management, making these rotors suitable for both daily driving and more demanding applications.

Technical Specifications and Features

These rotors feature a vented design with straight vanes to promote airflow and reduce heat buildup. The cross-drilled and slotted surface improves pad bite and helps prevent glazing. The coated hat finish protects against rust and corrosion, ensuring durability over time. Key dimensions include a 312 mm (12.283 inch) outside diameter, 18 mm (0.709 inch) nominal thickness, and 68.1 mm (2.681 inch) overall height. The rotor mounts with a 6-lug pattern on a 139.7 mm (5.5 inch) bolt circle diameter, compatible with the specified Lexus and Toyota models. Note that this rotor does not include an ABS tone ring or bearings.

Applications and Problem Solving

• Improves braking performance on Lexus GX470, Toyota 4Runner, FJ Cruiser, and Sequoia
• Reduces brake fade during heavy or prolonged braking
• Minimizes rotor warping caused by excessive heat
• Helps maintain consistent brake pad contact and reduces glazing
• Protects against corrosion with coated hat finish for longer service life

Installation Notes and Tips

• Ensure compatibility with vehicle lug pattern and rotor dimensions before installation
• Inspect brake pads and calipers for wear or damage during rotor replacement
• Follow manufacturer torque specifications for mounting bolts
• Perform a proper bed-in procedure after installation to optimize rotor and pad performance
• Check for any ABS sensor clearance issues as this rotor does not include an ABS tone ring

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 rotors undergo rigorous quality control to ensure consistent performance and durability. 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 the manufacturer for exact warranty terms.