Stoptech 126.66057SL Disc Brake Rotor - Front Left

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.66057SL) are engineered for reliable braking performance on select Cadillac, Chevrolet, and GMC trucks and SUVs. Designed with vented construction and slotted surfaces, these rotors provide consistent heat dissipation and improved brake pad bite under demanding conditions.

• Vented disc brake rotor design for enhanced cooling
• Slotted surface type to reduce brake fade and improve pad cleaning
• Coated hat finish to resist corrosion
• Floating disc mounting for better rotor alignment and performance
• Compatible with 6-lug wheel configurations
• Precision dimensions: 330 mm outside diameter, 30 mm nominal thickness

Detailed Product Features and Specifications

The StopTech Sport Slotted Disc Brake Rotor 126.66057SL features a vented rotor design with straight vane style to optimize airflow and heat dissipation during braking. The rotor has a nominal thickness of 30.000 mm and a discard thickness of 28.000 mm, ensuring a long service life before replacement is necessary. The slotted surface enhances brake pad bite and helps remove debris and gases from the pad surface, improving overall braking consistency. The rotor’s hat is coated to protect against rust and corrosion, extending durability in various driving environments. With an overall height of 55.000 mm and a center hole diameter of 78.500 mm, this rotor fits specific GM trucks and SUVs with a 6-lug, 140.5 mm bolt circle diameter.

About StopTech Sport Slotted Disc Brake Rotors

The StopTech Sport Slotted Disc Brake Rotors line is designed to provide enhanced braking performance for trucks and SUVs that require reliable heat management and consistent stopping power. This product line focuses on slotted rotors with vented construction to improve cooling and reduce brake fade during heavy use. The 126.66057SL rotor is part of this line, offering a balance of durability and performance for vehicles like the Chevrolet Silverado 1500 and GMC Sierra 1500.

Compatible Vehicles and Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT, XTS
• Chevrolet Avalanche, Cheyenne, Express 1500, Silverado 1500 (including Classic and LD), Suburban 1500, Tahoe
• GMC Sierra 1500 (Classic and Limited), Savana 1500, Yukon, Yukon XL, Yukon XL 1500

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during towing or heavy braking
• Uneven brake pad wear due to rotor surface glazing or contamination
• Corrosion and rust on rotor hats reducing rotor lifespan
• Brake noise and vibration from warped or worn rotors
• Reduced braking performance in wet or dusty conditions

Installation Notes and Tips

• Ensure rotor discard thickness of 28.000 mm is not exceeded before replacement
• Verify compatibility with 6-lug, 140.5 mm bolt circle diameter hubs
• Clean rotor surface before installation to remove any protective coatings
• Use proper torque specifications on mounting bolts to avoid rotor warping
• Check brake pads for wear and replace if necessary to maximize rotor performance

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. 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 product documentation or manufacturer resources for exact warranty terms.