Stoptech 127.42080L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 127.42080L) are engineered for enhanced braking performance on select Infiniti and Nissan vehicles. Designed to improve heat dissipation and reduce brake fade, these rotors are an ideal upgrade for models such as the Nissan 350Z, 370Z, Altima, and Infiniti G35, Q70, and FX35.

• Cross-drilled and slotted surface for improved cooling and debris removal
• Vented rotor design to enhance heat dissipation
• Coated hat finish to resist corrosion
• Floating disc mounting for better rotor alignment and reduced warping
• Compatible with 5-lug wheel configurations
• Nominal thickness of 1.106 inches (28.1 mm) with discard thickness at 1.024 inches (26 mm)
• Outside diameter of 12.583 inches (319.6 mm) for precise fitment

Detailed Product Description

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors feature a vented design with straight vanes that promote efficient airflow to reduce heat buildup during braking. The cross-drilled holes and slots on the rotor surface help evacuate gases, dust, and water, maintaining consistent brake pad contact and improving stopping power. The coated hat finish protects the rotor from rust and corrosion, extending its service life. These rotors have a floating disc mounting system that allows slight movement between the rotor and hat, reducing stress and minimizing the risk of warping under high thermal loads.

With an outside diameter of 12.583 inches (319.6 mm) and a center hole diameter of 2.677 inches (68 mm), these rotors are designed to fit a range of Infiniti and Nissan models including the 350Z, 370Z, Altima, EX35, FX35, G35, M35, Maxima, Murano, Q40, Q70, and QX50. The 5-lug hole pattern with a 4.5-inch bolt circle diameter ensures compatibility with factory wheel setups.

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is engineered to provide improved braking performance for street and light track use. This product line focuses on enhancing rotor cooling and pad bite through precision cross-drilling and slotting patterns. The vented rotor design and coated hats contribute to durability and consistent performance under demanding conditions. Part number 127.42080L is a representative model within this line, tailored for specific Infiniti and Nissan vehicles requiring reliable, performance-oriented rotors.

Common 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
• Prevents rotor warping through vented design and floating mounting
• Enhances overall brake responsiveness and pedal feel

Installation Notes and Tips

• Ensure compatibility with your vehicle’s make and model before installation
• Inspect brake pads and replace if worn to maximize rotor performance
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Bleed brake system after installation to remove air and maintain brake feel
• Check rotor thickness regularly and replace when reaching discard thickness of 1.024 inches (26 mm)

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always refer to the manufacturer’s warranty documentation for complete terms.