Stoptech 127.42070L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor 127.42070L is engineered for enhanced braking performance on select Nissan and Infiniti vehicles. Designed to improve heat dissipation and maintain consistent stopping power, this rotor is a reliable upgrade for your Nissan Altima, Infiniti I35, or Nissan Maxima.

• Cross-drilled and slotted surface for improved heat and gas dissipation
• Vented rotor design with straight vanes for efficient cooling
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion management
• Compatible with 5-lug wheel configurations and 11.654 inch (296 mm) outside diameter

Detailed Product Features and Specifications

This StopTech rotor features a nominal thickness of 0.945 inches (24.000 mm) and a discard thickness of 0.866 inches (22.000 mm), ensuring durability and safety margins for wear. The rotor’s overall height measures 1.937 inches (49.200 mm), with a center hole diameter of 2.677 inches (68.000 mm) and a mounting bolt hole circle diameter of 4.5 inches (114.300 mm). The rotor is vented with straight vanes to optimize airflow and cooling during braking. The slotted and drilled surface design helps to reduce brake fade by allowing gases and debris to escape, maintaining consistent pad contact. The hat is coated to protect against rust and corrosion, extending the rotor’s service life. This rotor does not include ABS tone rings or bearings and is designed for floating disc mounting systems.

About 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 dissipation and pad bite. The combination of cross-drilled holes and precision slots helps to evacuate gases and debris, reducing brake fade and maintaining consistent braking under demanding conditions. This product line is suitable for drivers seeking a balance between daily driving reliability and sporty braking response, making it a practical choice for Nissan Altima, Infiniti I35, and Nissan Maxima owners looking to upgrade their braking system.

Common Applications and Problem Solving

• Reduces brake fade during aggressive or extended braking
• Improves heat dissipation to prevent rotor warping
• Enhances pad bite and braking responsiveness
• Minimizes buildup of brake dust and gases on rotor surface
• Protects against corrosion with coated hat finish

Installation Notes and Tips

• Ensure compatibility with Nissan Altima, Infiniti I35, or Nissan Maxima models before installation
• Check rotor thickness and discard thickness to confirm safe replacement limits
• Use proper torque specifications for the 5-lug mounting pattern (bolt circle diameter 114.3 mm)
• Inspect brake pads and calipers during rotor replacement for optimal performance
• Floating disc mounting requires correct alignment to avoid uneven wear

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The 127.42070L rotor undergoes 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 the product documentation or manufacturer for exact warranty terms.