Stoptech 227.66040R Disc Brake Rotor - Front Right

StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors Overview

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotor 227.66040R is engineered for reliable braking performance on select Cadillac, Chevrolet, and GMC trucks and SUVs. Designed to meet the demands of vehicles like the Chevrolet Silverado 1500 and GMC Sierra 1500, this rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for improved heat dissipation and brake pad cleaning
• Vented rotor design to reduce brake fade under heavy use
• Floating disc mounting for better rotor alignment and reduced stress
• Compatible with 6-lug wheel configurations and 305 mm outside diameter
• Nominal thickness of 29.1 mm with discard thickness at 27.2 mm for durability

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

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on delivering enhanced braking performance through advanced rotor surface technology. The cross-drilled and slotted design helps maintain optimal brake pad contact by removing debris and gases, while the vented construction improves airflow to reduce heat buildup. This product line is tailored for drivers seeking improved brake response and durability on trucks and SUVs such as the Cadillac Escalade and Chevrolet Tahoe.

Technical Specifications and Features

This disc brake rotor features a 305 mm (12.008 inch) outside diameter and a nominal thickness of 29.1 mm (1.146 inches), with a discard thickness of 27.2 mm (1.071 inches). The rotor’s overall height measures 58.2 mm (2.291 inches). It includes a floating disc mounting system and straight vane style for efficient cooling. The rotor is designed for vehicles with a 6-lug wheel pattern, 139.7 mm (5.5 inch) bolt circle diameter, and 16.4 mm (0.646 inch) stud hole diameter. Note that this rotor does not include ABS tone rings or bearings.

Compatible Vehicles and Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD, Suburban 1500, Tahoe
• GMC Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Yukon, Yukon XL 1500
• Chevrolet Avalanche 1500, Express 1500, Express 2500
• GMC Safari, Savana 1500, Savana 2500, Astro

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat during towing or heavy braking
• Uneven brake pad wear due to rotor surface glazing or debris
• Reduced braking efficiency from warped or worn rotors
• Brake noise and vibration from rotor surface irregularities
• Overheating issues in vented rotor applications

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (27.2 mm) before installation
• Verify compatibility with vehicle’s 6-lug wheel pattern and bolt circle diameter
• Clean rotor surface before installation to remove any protective coatings
• Use proper torque specifications on lug nuts to avoid rotor warping
• Check for ABS tone ring requirements as this rotor does not include one

Quality Assurance and Warranty

StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. Each rotor undergoes rigorous quality control to ensure consistent performance and durability. While specific warranty details may vary, StopTech products typically come with a limited warranty covering defects in materials and workmanship.