Stoptech 127.66040R Disc Brake Rotor - Front Right

StopTech Sport Rotor Overview

StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors deliver a direct replacement upgrade for factory brake systems with stock calipers. This front right rotor is built for drivers who want stronger pedal response, improved heat management, and a cleaner look behind the wheel on applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade.

Part number 127.66040R is engineered as a 1-piece vented disc rotor with a slotted X-drilled surface, coated hat finish, and black e-coating for corrosion resistance. The design supports better wet and dry braking performance while helping reduce pad glazing and brake dust buildup.

Key Features

• Direct replacement disc brake rotor for factory brake systems and stock calipers
• Cross-drilled and slotted surface helps move heat and brake dust away from the braking area
• Vented rotor construction for improved thermal control
• Black e-coating helps protect against corrosion
• High carbon metallurgy in most applications for quieter operation and improved crack resistance
• Coated hat finish for a cleaner appearance behind open wheels
• Front right position fitment

Product Line Details

The StopTech Sport Cross-Drilled & Slotted Disc Brake Rotors line focuses on OE-style replacement fitment with performance-oriented rotor machining. The drilled and slotted pattern is intended to improve bite and maintain consistent braking feel during repeated stops, making it a practical upgrade for trucks and SUVs that see daily driving, towing, or mixed road conditions.

Detailed Description

StopTech 127.66040R is a vented front right brake rotor with a 12.008-inch outside diameter, 1.146-inch nominal thickness, 1.071-inch discard thickness, and 5.500-inch bolt circle. It uses a floating disc mounting style, straight vane design, and a 6-lug pattern with a 3.098-inch center hole. The slotted X-drilled face is intended to improve pad bite, reduce glazing, and support more stable braking in wet and dry conditions. Fits 1999-2008 Chevrolet Silverado 1500, front right; Fits 1999-2003 GMC Sierra 1500, front right; Fits 2000-2006 Cadillac Escalade, front right. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Brake fade during repeated stops
• Excess heat buildup at the rotor surface
• Pad glazing that can reduce initial bite
• Brake dust accumulation on the rotor face
• Corrosion on exposed rotor surfaces

Installation Notes and Tips

Install on the front right position only and verify rotor dimensions, hub fitment, and 6-lug configuration before installation. Use with the correct factory brake system and stock calipers for the listed applications. Clean the rotor surface before service and follow proper bedding procedures after installation to help the pads and rotor seat correctly.

Quality Assurance

StopTech manufactures this rotor with corrosion-resistant coating and high carbon metallurgy in most applications to support quieter operation and improved crack resistance. The part is built as a direct replacement rotor for the listed vehicles and brake configurations.