Stoptech 227.66043L Disc Brake Rotor - Rear Left

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

The StopTech Select Sport Cross-Drilled & Slotted Disc Brake Rotor 227.66043L is engineered for reliable braking performance on heavy-duty vehicles. Designed specifically for Chevrolet, GMC, and Hummer models, this vented rotor features a slotted and drilled surface to enhance heat dissipation and maintain 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
• Nominal outside diameter of 330 mm (12.992 inches) for optimal fitment
• Overall height of 85.7 mm (3.374 inches) ensuring proper caliper clearance
• Eight lug holes with a 165.1 mm (6.5 inches) bolt circle diameter for secure mounting
• Floating disc mounting design with straight vane style for efficient cooling
• Discard thickness of 26.5 mm (1.043 inches) and nominal thickness of 29 mm (1.142 inches)
• Weight approximately 24 lbs (10.91 kgs) balancing durability and performance

About the 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 enhanced braking performance through advanced rotor surface technology. The combination of cross-drilled holes and precision slots helps to evacuate gases, dust, and water from the braking surface, improving pad bite and reducing the risk of brake fade. This product line is tailored for drivers who require dependable stopping power in demanding conditions, such as towing or heavy payload applications common with Chevrolet Silverado 2500 and GMC Sierra 2500 HD trucks.

Detailed Product Description

This disc brake rotor, part number 227.66043L, is a vented rotor featuring a floating mounting design and straight vane style to optimize airflow and cooling during braking. The rotor’s outside diameter measures 330 mm (12.992 inches), with an overall height of 85.7 mm (3.374 inches), ensuring compatibility with specific heavy-duty Chevrolet, GMC, and Hummer models. The rotor’s slotted and drilled surface improves heat dissipation and helps maintain consistent brake pad contact, which is critical for vehicles like the Chevrolet Avalanche 2500 and GMC Yukon XL 2500 that often operate under heavy loads.

Applications and Problem Solving

• Reduces brake fade during extended towing or hauling
• Improves braking response in wet or dusty conditions
• Minimizes brake pad glazing and uneven wear
• Enhances heat dissipation for prolonged rotor life
• Maintains consistent braking performance under heavy-duty use

Installation Notes and Tips

Ensure the rotor is installed on compatible vehicles such as Chevrolet Silverado 1500 HD Classic or GMC Sierra 1500 HD with the correct bolt pattern of 8 lug holes on a 165.1 mm (6.5 inch) bolt circle diameter. Verify rotor thickness before installation; the nominal thickness is 29 mm (1.142 inches) with a discard thickness of 26.5 mm (1.043 inches). Proper torque specifications should be followed to avoid warping. This rotor does not include bearings or ABS tone rings, so confirm compatibility with your vehicle’s braking system.

Quality Assurance

StopTech disc brake rotors are manufactured to meet or exceed OEM specifications for durability and performance. The 227.66043L rotor undergoes rigorous quality control to ensure consistent thickness, balance, and surface finish. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed warranties covering defects in materials and workmanship.