Stoptech 227.66069R Disc Brake Rotor - Front Right

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

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 227.66069R) are engineered for reliable braking performance on select Buick, Chevrolet, GMC, and Saturn SUVs. Designed specifically for models like the Acadia, Acadia Limited, Enclave, Outlook, and Traverse, these rotors offer enhanced heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for improved heat and gas dissipation
• Vented rotor design to reduce brake fade under heavy use
• Compatible with 6-lug wheel configurations
• Floating disc mounting for better rotor alignment and performance
• Precision dimensions: 12.795 inch (325 mm) outside diameter, 1.142 inch (29 mm) nominal thickness

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

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on delivering enhanced braking efficiency through a combination of cross-drilled holes and precision slots. This design improves water, dust, and gas evacuation from the rotor surface, which helps maintain consistent brake pad contact and reduces the risk of brake fade. The vented rotor construction further aids in heat management, making these rotors suitable for both daily driving and moderate performance applications.

Technical Specifications and Features

These rotors feature a vented design with straight vanes to optimize airflow and cooling. The overall height measures 2.157 inches (54.8 mm), with a center hole diameter of 2.972 inches (75.5 mm) and a mounting bolt circle diameter of 5.197 inches (132 mm). The rotor includes six stud/lug holes with a diameter of 0.618 inches (15.7 mm), matching the wheel hub specifications of compatible vehicles. Weighing approximately 23.15 lbs (10.52 kg), the rotor balances durability with manageable weight for improved vehicle dynamics. Note that this rotor does not include an ABS tone ring or bearings.

Compatible Vehicles and Applications

• Buick Acadia and Acadia Limited
• Chevrolet Traverse
• GMC Acadia
• Saturn Outlook

This rotor is designed to replace factory disc brake rotors on these models, providing consistent braking performance and improved heat management.

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup during prolonged braking
• Uneven brake pad wear due to poor rotor surface conditions
• Reduced braking efficiency in wet or dusty conditions
• Warped or damaged rotors leading to vibration or noise
• Insufficient cooling in stock solid rotors

Installation Notes and Tips

Ensure the rotor thickness is within the nominal range of 1.142 inches (29 mm) before installation. The discard thickness is 1.083 inches (27.5 mm), and rotors worn below this should be replaced. This rotor uses a floating disc mounting system, so proper alignment during installation is critical. Verify compatibility with your vehicle’s 6-lug wheel hub and torque mounting bolts to manufacturer specifications. Since bearings and ABS tone rings are not included, reuse existing components or replace separately as needed.

Quality Assurance and Warranty

StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The vented and cross-drilled design undergoes rigorous quality control to ensure durability and consistent braking performance. Warranty coverage details should be confirmed with the original product documentation or authorized distributor.