Stoptech 127.66041L 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 127.66041L) are engineered for Chevrolet and GMC trucks and SUVs, including models like the Silverado 1500, Sierra 1500, Tahoe, and Yukon. These rotors provide enhanced braking performance through a vented, slotted, and cross-drilled design that improves heat dissipation and reduces brake fade.

• Cross-drilled and slotted surface for improved heat dissipation and debris removal
• Vented rotor design to maintain optimal operating temperatures
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with Chevrolet and GMC models including Silverado 1500, Sierra 1500, Tahoe, Yukon, and more
• Part Number 127.66041L ensures precise fitment and reliable performance
• Floating disc mounting design with straight vane style for efficient cooling
• Nominal outside diameter of 325 mm (12.795 inches) and overall height of 85.3 mm (3.358 inches)

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

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to offer improved braking performance for trucks and SUVs that demand reliable stopping power under various driving conditions. Featuring a combination of cross-drilled holes and precision-machined slots, these rotors help reduce heat buildup and remove brake dust and gases, which can degrade braking efficiency. The vented rotor design further enhances cooling, making this product line suitable for both daily driving and more demanding applications.

Product Details and Specifications

This disc brake rotor features a vented design with straight vanes to optimize airflow and cooling. The rotor's surface is cross-drilled and slotted, which aids in heat dissipation and helps maintain consistent brake pad contact. The coated hat finish protects against rust and corrosion, extending the rotor's service life. Key dimensions include a nominal thickness of 20.0 mm (0.787 inches), discard thickness of 18.5 mm (0.728 inches), and a center hole diameter of 78.7 mm (3.098 inches). The rotor mounts with six lug holes spaced on a 139.7 mm (5.5 inch) bolt circle diameter, compatible with the specified Chevrolet and GMC models.

Compatible Vehicles and Applications

• Chevrolet Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD
• GMC Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD
• Chevrolet Tahoe, Suburban 1500
• GMC Yukon, Yukon XL 1500
• Chevrolet Astro, Avalanche 1500, Safari

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat during towing or heavy braking
• Uneven brake pad wear due to poor rotor surface design
• Corrosion and rust buildup on rotor hats and braking surfaces
• Reduced braking efficiency from brake dust and gas accumulation
• Vibration or noise caused by warped or damaged rotors

Installation Notes and Tips

• Ensure the rotor thickness is above the discard thickness of 18.5 mm before installation
• Clean the rotor surface to remove any protective coatings or oils prior to mounting
• Verify compatibility with your vehicle’s lug pattern and bolt circle diameter (6 lug holes on 139.7 mm)
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Inspect brake pads and calipers during installation for optimal braking performance

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 defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.