Stoptech 227.66005L Disc Brake Rotor - Front Left

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

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors (Part Number 227.66005L) are 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, 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 during heavy use
• Compatible with Chevrolet and GMC heavy-duty trucks and SUVs
• Nominal thickness of 1.291 inches (32.8 mm) with discard thickness at 1.215 inches (30.86 mm)
• Eight stud/lug hole configuration with 0.563 inch stud thread diameter
• Overall diameter of 12.5 inches (317.5 mm) and overall height of 4.764 inches (121 mm)

Product Line Details

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 to evacuate heat, dust, and gases generated during braking, which is critical for maintaining consistent brake pad contact and reducing fade. This product line is tailored for drivers who require dependable braking on heavy-duty Chevrolet and GMC vehicles, such as the C20 Suburban and P3500 models.

Technical Specifications and Features

This disc brake rotor features a vented design with straight vanes to optimize airflow and cooling. The rotor's nominal thickness is 1.291 inches (32.8 mm), with a discard thickness of 1.215 inches (30.86 mm), ensuring a long service life before replacement is necessary. The rotor measures 12.5 inches (317.5 mm) in outside diameter and 4.764 inches (121 mm) in overall height, fitting the specified Chevrolet and GMC models precisely. It includes an 8-lug hole pattern with a 0.563 inch stud thread diameter and a mounting bolt hole circle diameter of 6.5 inches (165.1 mm). This rotor does not include an ABS tone ring or bearings.

Applications and Problem Solving

• Restores braking efficiency on Chevrolet C20 and GMC R2500 Suburban vehicles
• Reduces brake fade during heavy towing or hauling
• Improves heat dissipation to prevent rotor warping
• Minimizes brake dust buildup for cleaner braking surfaces
• Addresses uneven rotor wear and vibration issues

Installation Notes and Tips

Ensure the rotor thickness is within the nominal range before installation. Clean the rotor surface to remove any protective coatings or debris. Verify compatibility with your vehicle’s lug pattern and stud thread diameter. Use proper torque specifications when mounting to avoid rotor distortion. This rotor is designed for hub and rotor mounting configurations on Chevrolet and GMC trucks and SUVs.

Quality Assurance and Warranty

StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotors are manufactured to meet or exceed OEM standards for durability and performance. While specific warranty details are not provided here, StopTech products typically come with a limited warranty against defects in materials and workmanship. Always consult the product documentation or manufacturer for exact warranty terms.