Stoptech 127.66069L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotor (Part Number 127.66069L) is engineered for reliable braking performance on select Buick, Chevrolet, GMC, and Saturn SUVs. Designed specifically for models like the Acadia, Acadia Limited, Enclave, Outlook, and Traverse, this rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for improved heat and gas dissipation
• Vented rotor design to reduce brake fade under heavy use
• Coated hat finish to resist corrosion and extend rotor life
• Floating disc mounting for better thermal expansion management
• Compatible with 6-lug wheel configurations on specified GM SUVs

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on performance-oriented rotors that combine cross-drilled holes and precision slots. This design improves braking efficiency by allowing gases and debris to escape while maintaining rotor integrity. The vented construction further aids in heat management, making these rotors suitable for both daily driving and more demanding conditions. The coated hat finish helps protect against rust, ensuring durability over time.

Technical Specifications and Features

This disc brake rotor features a nominal thickness of 1.142 inches (29.000 mm) and a discard thickness of 1.083 inches (27.500 mm), providing a solid balance between durability and performance. The rotor’s outside diameter measures 12.795 inches (325.000 mm), with an overall height of 2.157 inches (54.800 mm). It includes a floating disc mounting system and a straight vane style for efficient cooling. The rotor is designed for vehicles with a 6-lug wheel pattern, featuring a mounting bolt hole circle diameter of 5.197 inches (132.000 mm) and stud/lug hole diameter of 0.618 inches (15.700 mm). The center hole diameter is 2.972 inches (75.500 mm), and the rotor weighs approximately 23.15 lbs (10.52 kgs).

Applications and Problem Solving

• Reduces brake fade during extended or aggressive braking
• Improves heat dissipation to prevent rotor warping
• Minimizes brake dust and gas buildup for consistent pedal feel
• Resists corrosion with coated hat finish for longer service life
• Compatible with ABS systems that do not require tone rings

Installation Notes and Tips

• Ensure compatibility with Buick Acadia, Chevrolet Traverse, GMC Acadia Limited, Saturn Outlook, and Buick Enclave models
• Check rotor thickness before installation; replace if below discard thickness of 1.083 inches
• Use proper torque specifications for the 6-lug wheel mounting
• Inspect brake pads and calipers during rotor replacement for optimal performance
• Floating disc mounting requires correct alignment to avoid noise or uneven wear

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 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. Always consult the product documentation or manufacturer for exact warranty terms.