Stoptech 127.42078R Disc Brake Rotor - Rear Right

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.42078R) are engineered for enhanced braking performance and durability. Designed specifically for select Infiniti and Nissan models, these rotors provide reliable stopping power with improved heat dissipation and reduced brake fade.

• Cross-drilled and slotted surface for efficient heat and gas dissipation
• Vented rotor design to maintain optimal operating temperatures
• Coated hat finish to resist corrosion and extend rotor life
• Precision fit with 5 lug holes and 12.8 mm stud diameter
• Compatible with Infiniti FX35, FX37, FX45, JX35, M35h, M37, M56, Murano, Pathfinder, Q50, Q60, Q70, Q70L, Quest, QX60, and QX70

Detailed Product Features and Specifications

This disc brake rotor features a nominal thickness of 0.630 inches (16.000 mm) and a discard thickness of 0.551 inches (14.000 mm), ensuring a solid braking surface throughout its service life. The rotor’s outside diameter measures 12.110 inches (307.600 mm), with an overall height of 2.445 inches (62.100 mm). The vented design incorporates straight vanes to promote airflow and heat dissipation, reducing the risk of brake fade during demanding driving conditions.

The rotor’s mounting specifications include a center hole diameter of 2.677 inches (68.000 mm) and a mounting bolt hole circle diameter of 4.500 inches (114.300 mm), with five lug holes sized at 0.504 inches (12.800 mm). The hat section is coated to protect against corrosion, enhancing durability and maintaining performance over time. This rotor does not include an ABS tone ring or bearings.

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to improve braking efficiency by combining cross-drilled holes and precision slots. This design helps to evacuate heat, brake dust, and gases generated during braking, which can otherwise reduce rotor and pad performance. The vented rotor construction further aids in cooling, making this product line suitable for drivers seeking consistent braking performance under normal and spirited driving conditions.

Applications and Problem Solving

• Reduces brake fade caused by excessive heat buildup
• Improves wet weather braking by channeling water away from the rotor surface
• Minimizes brake dust accumulation for cleaner braking components
• Enhances overall brake pad bite and responsiveness
• Prevents rotor warping through improved heat dissipation

Installation Notes and Tips

• Ensure compatibility with your specific Infiniti or Nissan model before installation
• Inspect brake pads and replace if worn to maximize rotor performance
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Check rotor thickness and discard limits regularly to maintain safety
• Professional installation is recommended for optimal fit and function

Quality Assurance and Warranty

StopTech disc brake rotors are manufactured to meet or exceed OEM standards 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. Refer to the product packaging or manufacturer documentation for exact warranty terms.