Stoptech 128.66065L Disc Brake Rotor - Rear Left

Overview of StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors (Part Number 128.66065L) are engineered for reliable braking performance on select GM trucks and SUVs. Designed to meet the demands of vehicles like the Chevrolet Silverado 1500 and Cadillac Escalade, these rotors offer enhanced heat dissipation and consistent stopping power.

• Cross-drilled surface for improved heat dissipation and brake fade reduction
• Vented rotor design with straight vane style for efficient cooling
• Coated hat finish to resist corrosion and extend rotor life
• Compatible with 6-lug wheel configurations and 5.5-inch bolt circle diameter
• Precision dimensions: 345 mm outside diameter, 20 mm nominal thickness

Product Line Details: StopTech Sport Cross-Drilled Disc Brake Rotors

The StopTech Sport Cross-Drilled Disc Brake Rotors line focuses on performance-oriented rotors that feature cross-drilled surfaces to enhance cooling and reduce brake fade under demanding conditions. This part, 128.66065L, incorporates a vented rotor design with straight vanes to maintain optimal operating temperatures. The coated hat finish provides corrosion resistance, making it suitable for daily driving and moderate performance use on vehicles such as the GMC Yukon XL and Chevrolet Tahoe.

Technical Specifications and Compatibility

This disc brake rotor measures 345 mm (13.583 inches) in outside diameter with a nominal thickness of 20 mm (0.787 inches) and a discard thickness of 18.5 mm (0.728 inches). The overall height is 85.4 mm (3.362 inches), and it features a 78.5 mm (3.091 inches) center hole diameter. The rotor is vented with straight vanes to promote airflow and heat dissipation. It is designed for vehicles with a 6-lug wheel pattern and a 139.7 mm (5.5 inches) bolt circle diameter. Note that this rotor does not include ABS tone rings or bearings.

Applications and Problem Solving

• Reduces brake fade during heavy braking on trucks like the Chevrolet Silverado 1500 LD
• Improves heat dissipation for SUVs such as the Cadillac Escalade ESV
• Helps maintain consistent braking performance under load in GMC Sierra 1500 Limited
• Resists corrosion with coated hat finish for extended rotor life on vehicles like the Chevrolet Avalanche
• Compatible with floating/dih disc mounting systems for proper fitment on Yukon XL 1500

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (18.5 mm) before installation
• Verify 6-lug wheel compatibility and 5.5-inch bolt circle diameter on your vehicle
• Clean rotor surface before installation to remove any protective coatings
• Check for proper fitment on models including Suburban 1500 and Tahoe
• Use recommended torque specifications for mounting bolts to avoid warping

Quality Assurance and Warranty

StopTech Sport Cross-Drilled Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. The coated hat finish enhances corrosion resistance, contributing to the rotor's durability. While specific warranty details are not provided, StopTech products typically adhere to industry quality controls to ensure reliable braking performance on compatible Cadillac, Chevrolet, and GMC models.