Stoptech 127.42101L 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 127.42101L) are engineered for enhanced braking performance on select INFINITI and Nissan vehicles. Designed specifically for models like the 350Z, 370Z, G37, Q60, and Z, these rotors offer improved heat dissipation and consistent stopping power under demanding conditions.

• Cross-drilled and slotted surface for efficient heat and gas dissipation
• Vented rotor design with straight vane style for optimal cooling
• Coated hat finish to resist corrosion and extend rotor life
• Precision fit with 5 lug holes and 114.3 mm bolt circle diameter
• Nominal outside diameter of 350 mm (13.78 inches) and overall height of 62.2 mm (2.449 inches)

Detailed Product Features and Specifications

This disc brake rotor features a vented design with straight vanes that promote airflow to reduce heat buildup during braking. The cross-drilled and slotted surface enhances pad bite and helps evacuate brake dust and gases, which can improve braking consistency. The rotor’s coated hat finish provides corrosion resistance, helping maintain structural integrity over time. With a nominal thickness of 20 mm (0.787 inches) and a discard thickness of 18 mm (0.709 inches), this rotor meets strict durability standards. The center hole diameter measures 68 mm (2.677 inches), and the rotor includes five lug holes with a diameter of 12.8 mm (0.504 inches), ensuring compatibility with the specified INFINITI and Nissan models.

About the StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide enhanced braking performance for sport and performance vehicles. This product line focuses on improving heat dissipation and brake pad contact through cross-drilled holes and precision slots, which help maintain consistent braking under aggressive driving conditions. The vented rotor design further aids in cooling, making these rotors suitable for spirited street driving and occasional track use.

Applications and Problem Solving

• Reduces brake fade caused by excessive heat buildup
• Improves braking response and pad bite on INFINITI and Nissan 350Z, 370Z, G37, Q60, and Z models
• Minimizes brake dust accumulation for cleaner rotor surface
• Prevents corrosion with coated hat finish for longer service life
• Maintains structural integrity under repeated heavy braking

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (18 mm) before installation
• Use proper torque specifications for the 5 lug bolts on a 114.3 mm bolt circle
• Inspect brake pads and replace if worn to optimize rotor performance
• Clean rotor surface before installation to remove any protective coatings or debris
• Check compatibility with ABS systems as this rotor does not include an ABS tone ring

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The rotors undergo rigorous quality control to ensure durability and consistent performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. It is recommended to consult the product documentation or manufacturer for exact warranty terms.