Stoptech 227.66005R 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 (Part Number 227.66005R) is engineered for reliable braking performance on Chevrolet and GMC trucks and SUVs. Designed specifically for models like the Chevrolet C20, C2500, and GMC R2500 Suburban, this vented rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled and slotted surface for improved brake pad bite and heat dissipation
• Vented rotor design to reduce brake fade during heavy use
• Nominal thickness of 1.291 inches (32.8 mm) with discard thickness at 1.215 inches (30.86 mm)
• Compatible with vehicles requiring an 8-stud lug pattern and 12.5-inch (317.5 mm) outside diameter
• Designed for hub and rotor mounting with a center hole diameter of 4.591 inches (116.6 mm)

Detailed Product Description

This StopTech Select Sport rotor features a vented design with straight vanes to optimize airflow and cooling under demanding driving conditions. The cross-drilled and slotted surface helps evacuate gases, dust, and water, maintaining consistent brake pad contact and reducing the risk of brake fade. With an overall height of 4.764 inches (121 mm) and a stud thread diameter of 0.563 inches, this rotor is engineered to meet the exact specifications required for Chevrolet and GMC heavy-duty trucks and SUVs, including the C20 Suburban, C3500, and P30 models.

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

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors line is designed to provide a balance of performance and durability for street and light-duty applications. This product line focuses on enhanced rotor surface technology, combining cross-drilling and slotting to improve pad bite and heat management without compromising rotor strength. The 227.66005R rotor is a part of this line, offering a vented rotor design that supports consistent braking performance for Chevrolet and GMC trucks and vans.

Common Applications and Problem Solving

• Reduces brake fade during towing or heavy load conditions on Chevrolet C2500 and GMC P2500
• Improves braking response in wet or dusty environments for C20 Suburban and R20 models
• Helps prevent rotor warping and uneven pad wear on heavy-duty trucks like the C3500 and P30
• Maintains consistent stopping power for GMC G30 and P3500 vans used in commercial applications

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (1.215 inches) before installation
• Verify compatibility with vehicle lug pattern (8 studs) and center hole diameter (4.591 inches)
• Use proper torque specifications for mounting bolts with 18 mm thread pitch
• Inspect bearings and seals (inner bearing #410.91035, outer bearing #415.66000) during installation
• Brake system should be properly bled and pads inspected for wear after rotor replacement

Quality Assurance and Warranty

StopTech Select Sport rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The 227.66005R rotor undergoes rigorous quality control to ensure durability and consistent performance. While specific warranty details vary by distributor, StopTech products typically include a limited warranty against defects in materials and workmanship. Consult your product documentation or distributor for exact warranty terms.