Stoptech 128.66052R Disc Brake Rotor - Rear Right

StopTech Sport Cross-Drilled Disc Brake Rotors Overview

The StopTech Sport Cross-Drilled Disc Brake Rotor 128.66052R is engineered for reliable braking performance on select GM and related vehicles. Designed to meet the demands of drivers using Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models, this rotor offers enhanced heat dissipation and consistent stopping power.

• Cross-drilled surface for improved heat and gas dissipation
• Vented rotor design to reduce brake fade
• Coated hat finish for corrosion resistance
• Compatible with 6-lug bolt pattern and 12.795 inch (325 mm) outside diameter
• Nominal thickness of 0.787 inches (20.000 mm) with discard thickness at 0.728 inches (18.500 mm)

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

The StopTech Sport Cross-Drilled Disc Brake Rotors line focuses on performance-oriented rotors featuring cross-drilled surfaces to enhance cooling and reduce brake fade during demanding driving conditions. This product line incorporates vented rotor technology and a coated hat finish to provide durability and consistent braking performance. The 128.66052R rotor is part of this line, offering a balance of heat management and structural integrity for vehicles such as the Chevrolet Trailblazer and GMC Envoy.

Technical Specifications and Features

This disc brake rotor features a vented design with straight vanes to optimize airflow and heat dissipation. The cross-drilled surface helps to evacuate gases and debris from the braking surface, improving pad contact and reducing the risk of brake fade. The rotor has an overall height of 3.346 inches (85.000 mm) and a center hole diameter of 3.098 inches (78.700 mm), designed to fit vehicles with a 6-lug, 5.000 inch (127.000 mm) bolt circle diameter. The rotor weighs approximately 18 lbs (8.18 kgs), balancing strength and weight for effective braking without excessive unsprung mass.

Compatible Vehicles and Applications

• Buick 9-7x
• Chevrolet Trailblazer, Trailblazer EXT, SSR
• GMC Envoy, Envoy XL, Envoy XUV, Rainier
• Isuzu Ascender, Bravada
• Oldsmobile Bravada
• Saab 9-7x

This rotor is designed specifically for these models, ensuring proper fitment and performance when replacing worn or damaged rotors.

Common Issues Addressed by This Rotor

• Brake fade caused by excessive heat buildup
• Uneven pad wear due to poor heat dissipation
• Corrosion and rust on rotor hats and braking surfaces
• Vibration or pulsation from warped rotors
• Reduced braking efficiency on vented rotor applications

Installation Notes and Tips

Ensure the rotor thickness is within the nominal and discard thickness specifications before installation. The 128.66052R rotor requires a 6-lug wheel hub with a 5.000 inch bolt circle diameter. No ABS tone ring or bearings are included, so verify compatibility with your vehicle’s existing components. Proper cleaning of the rotor surface before installation is recommended to remove any protective coatings or residues.

Quality Assurance and Warranty

StopTech rotors are manufactured to meet or exceed OEM specifications for durability and performance. The coated hat finish provides corrosion resistance to extend rotor life. While specific warranty details are not provided here, StopTech products typically come with manufacturer-backed quality assurance to ensure reliable braking performance.