Stoptech 126.66045SR Disc Brake Rotor - Rear Right

Overview

StopTech Sport Slotted Disc Brake Rotor 126.66045SR is a 1-piece direct replacement rotor for factory brake systems and stock calipers. It is built for drivers who want stronger braking response, better heat control, and a cleaner-looking rotor behind the wheel.

Key Features

• Slotted surface helps move heat and brake dust away from the pad face.
• Direct replacement design for factory brake systems and stock calipers.
• Black e-coating helps protect exposed surfaces from corrosion.
• High-carbon metallurgy in most applications supports quieter operation and improved crack resistance.
• Vented construction with straight vanes for consistent cooling.

Detailed Description

This StopTech rotor is engineered as a direct-fit brake disc for compatible rear right applications, including Chevrolet Express 1500, GMC Savana 1500, and other listed trucks and SUVs. The slotted face helps reduce pad glazing and improve bite in wet and dry conditions, while the vented, straight-vane design supports heat management during repeated stops. Part number 126.66045SR is a practical upgrade for owners looking to restore braking performance without changing the factory brake system layout.

StopTech Sport Slotted Disc Brake Rotors focus on functional performance and corrosion protection. The coated hat finish helps resist rust where the rotor is exposed, and the one-piece construction keeps the design straightforward for service replacement. Part number 126.66045SR is also listed for several 6-lug and Quadrasteer-equipped applications, so fitment should be matched carefully to the vehicle configuration.

What It Helps Solve

• Brake fade during repeated stops
• Pad glazing that reduces initial bite
• Brake dust buildup on the rotor face
• Corrosion on exposed rotor surfaces
• Noise and cracking concerns associated with worn rotors

Installation Notes

Verify rear right fitment against the vehicle’s brake configuration before installation. This rotor is listed for specific Chevrolet and GMC applications, including Express 1500, Savana 1500, Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban 1500, and related models. Match the part number 126.66045SR to the exact axle, caliper, and wheel setup shown in the fitment data.

Quality Assurance

StopTech positions this rotor as a direct replacement part for factory brake systems and stock calipers. The black e-coating and high-carbon metallurgy in most applications are used to support corrosion resistance, quieter operation, and improved durability under braking load.