Stoptech 126.66074SL Disc Brake Rotor - Front Left

StopTech Sport Slotted Disc Brake Rotors Overview

The StopTech Sport Slotted Disc Brake Rotors (Part Number 126.66074SL) are engineered for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Silverado 3500 HD, and Suburban 3500 HD. These rotors provide reliable braking performance with a focus on durability and heat dissipation.

• Compatible with Chevrolet and GMC heavy-duty trucks
• Slotted surface design for improved brake pad bite and debris removal
• Vented rotor type for enhanced cooling and reduced brake fade
• Coated hat finish to resist corrosion
• Floating disc mounting for better thermal expansion management
• Overall diameter of 355 mm (13.976 inches) and nominal thickness of 40 mm (1.575 inches)
• Eight stud/lug holes with a 180 mm (7.087 inches) bolt circle diameter

Detailed Product Description

The StopTech Sport Slotted Disc Brake Rotors feature a vented design with straight vanes that promote efficient heat dissipation during braking, reducing the risk of brake fade under heavy loads. The slotted surface enhances pad bite and helps channel away dust, gas, and water, maintaining consistent braking performance. The rotor’s hat is coated to protect against corrosion, extending the rotor’s service life. With a floating disc mounting system, these rotors accommodate thermal expansion, minimizing warping and improving overall durability. The rotor measures 355 mm in outside diameter and 40 mm in nominal thickness, with a discard thickness of 38.5 mm, ensuring compatibility with specified Chevrolet and GMC models.

StopTech Sport Slotted Disc Brake Rotors Product Line

The StopTech Sport Slotted Disc Brake Rotors line is designed to meet the demands of performance and heavy-duty applications. This product line focuses on rotors that provide enhanced cooling and braking efficiency through features like slotted surfaces and vented designs. The 126.66074SL rotor exemplifies this approach by combining these features with a coated hat finish and floating mounting to deliver consistent braking performance for heavy-duty Chevrolet and GMC trucks.

Applications and Problem Solving

• Improves braking performance on heavy-duty Chevrolet and GMC trucks
• Reduces brake fade during extended or heavy use
• Minimizes rotor warping caused by thermal expansion
• Helps maintain consistent pad contact by removing debris and gases
• Protects against corrosion for longer rotor life

Installation Notes and Tips

• Ensure compatibility with Chevrolet Sierra 2500 HD, Sierra 3500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Silverado 3500 HD, and Suburban 3500 HD models
• Check rotor discard thickness (38.5 mm) before installation to confirm rotor usability
• Use proper torque specifications for the 8 lug holes on a 180 mm bolt circle diameter
• Inspect brake pads and calipers during rotor replacement for optimal performance

Quality Assurance and Warranty

StopTech Sport Slotted Disc Brake Rotors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The coated hat finish provides corrosion resistance, and the vented, slotted design supports consistent braking under demanding conditions. Warranty information is provided by the manufacturer and should be verified at the time of purchase.