Stoptech 127.42100L 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 127.42100L) are engineered for enhanced braking performance on select Infiniti and Nissan vehicles. Designed to improve heat dissipation and reduce brake fade, these rotors are a reliable upgrade for models like the Infiniti Q50, Nissan 370Z, and others.

• 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 multiple Infiniti and Nissan models including 350Z, FX50, G37, Q60, and Q70

Detailed Product Features and Specifications

This disc brake rotor features a nominal thickness of 1.260 inches (32.000 mm) and a discard thickness of 1.181 inches (30.000 mm), ensuring a durable lifespan before replacement is necessary. The rotor has an outside diameter of 13.976 inches (355.000 mm) and an overall height of 1.937 inches (49.200 mm). It includes a floating disc mounting system and a straight vane style for efficient airflow and cooling. The rotor is vented, which helps maintain optimal braking temperatures during demanding driving conditions. The hat finish 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 features a 5-lug hole pattern with a mounting bolt hole circle diameter of 114.300 mm (4.500 inches).

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Product Line

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide enhanced braking performance through improved heat management and debris evacuation. The combination of cross-drilled holes and precision slots helps maintain consistent brake pad contact and reduces the risk of brake fade under high-stress conditions. This product line is suitable for drivers seeking a balance between daily driving reliability and spirited performance on vehicles such as the Infiniti Q70L and Nissan Z.

Applications and Problem Solving

• Reduces brake fade during aggressive driving or towing
• Improves heat dissipation to prevent rotor warping
• Helps remove brake dust and debris for consistent pad contact
• Resists corrosion with coated hat finish for longer service life
• Compatible with specific Infiniti and Nissan models requiring 355 mm rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Verify compatibility with vehicle make and model, including Infiniti 350Z, QX70, and Nissan M37
• Use proper torque specifications for mounting bolts to avoid rotor distortion
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Floating disc mounting requires correct alignment for best results

Quality Assurance and Warranty

StopTech disc brake 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 manufacturing defects. It is recommended to consult the product documentation or manufacturer for exact warranty terms.