Stoptech 126.66041SR Disc Brake Rotor - Rear Right

StopTech Rear Right Slotted Rotor

The StopTech Sport Slotted Disc Brake Rotor, part number 126.66041SR, is a direct replacement rear right rotor for factory brake systems and stock calipers. It is built for drivers who want improved braking response, cleaner pad contact, and a rotor that presents well behind the wheel.

Compatible With 1999-2007 Chevrolet Silverado 1500, GMC Sierra 1500, and related GMT 800 applications, this rotor uses a slotted surface and vented construction to support consistent braking in wet and dry conditions.

Key Features

• Part number 126.66041SR
• Rear right disc brake rotor for factory brake systems
• Slotted surface helps clear heat and brake dust
• Vented rotor design for improved thermal management
• Black e-coating helps resist corrosion
• High carbon metallurgy in most applications for quieter operation and improved crack resistance
• Coated hat finish for a cleaner appearance
• Direct replacement for stock caliper setups

Product Details

StopTech Sport Slotted Disc Brake Rotors are engineered as one-piece replacement brake discs that retain OE-style fitment while adding performance-focused slotting. The slots help reduce pad glazing, improve initial bite, and support more stable braking performance during repeated stops. The rotor measures 12.795 inches in outside diameter, 0.787 inch nominal thickness, and 3.358 inches overall height, with a 5.500-inch bolt circle and six lug holes.

This part number 126.66041SR is listed for rear right applications on Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Astro, GMC Safari, Chevrolet Avalanche 1500, Chevrolet Suburban 1500, Chevrolet Tahoe, GMC Yukon, and GMC Yukon XL 1500 across the confirmed model years shown below. It also matches 2007 Silverado 1500 Classic and Sierra 1500 Classic rear right fitments.

What It Helps Address

• Brake fade during repeated stops
• Pad glazing and reduced pad bite
• Brake dust buildup on the rotor surface
• Corrosion on exposed rotor surfaces
• Uneven braking feel from worn rear rotors

Fitment Notes

• Fits 2007 Chevrolet Silverado 1500 Classic, rear right; Classic GMT 800.
• Fits 2007 GMC Sierra 1500 Classic, rear right; Classic GMT 800.
• Fits 2005-2006 Chevrolet Silverado 1500, rear right.
• Fits 1999-2001 Chevrolet Silverado 1500, rear right.
• Fits 2005-2006 GMC Sierra 1500, rear right.
• Fits 1999-2001 GMC Sierra 1500, rear right.
• Fits 2003-2005 Chevrolet Astro, rear right.
• Fits 2003-2005 GMC Safari, rear right.
• Fits 2004 Chevrolet Silverado 1500, rear right; 6 lug wheels, 2 wheel steering, 325mm rear disc.
• Fits 2004 GMC Sierra 1500, rear right; 6 lug wheels, 2 wheel steering, 325mm rear disc.
• Fits 2002-2003 Chevrolet Silverado 1500, rear right; 2 wheel steering, 325mm rear disc.
• Fits 2002-2003 GMC Sierra 1500, rear right; 2 wheel steering, 325mm rear disc.
• Fits 2002 Chevrolet Avalanche 1500, rear right; single piston rear caliper.
• Fits 2001-2002 Chevrolet Suburban 1500, rear right; except limited slip axle.
• Fits 2001-2002 Chevrolet Tahoe, rear right; except limited slip axle.
• Fits 2001-2002 GMC Yukon, rear right; except limited slip axle.
• Fits 2002 GMC Yukon XL 1500, rear right; except limited slip axle.
• Fits 2001 Chevrolet Silverado 1500, rear right; except limited slip rear end.
• Fits 2001 Chevrolet Silverado 1500 HD, rear right.
• Fits 2001 GMC Sierra 1500, rear right; except LSD.
• Fits 2001 GMC Sierra 1500 HD, rear right.
• Fits 2000-2001 GMC Yukon XL 1500, rear right; except limited slip axle.
• Fits 2000 Chevrolet Suburban 1500, rear right; except limited slip axle.
• Fits 2000 Chevrolet Tahoe, rear right; except limited slip axle.
• Fits 2000 GMC Yukon, rear right; except limited slip rear axle.

Installation Notes

Install on the rear right position only and verify rotor dimensions, bolt pattern, and axle or caliper notes before assembly. This rotor is a direct replacement for stock brake systems, so proper pad condition, caliper operation, and hub cleanliness should be checked during service. Part number 126.66041SR is commonly selected when replacing a worn rear rotor on Chevrolet Silverado 1500 and GMC Sierra 1500 applications.

Quality Assurance

StopTech Sport Slotted Disc Brake Rotors use black e-coating for corrosion protection and high carbon metallurgy in most applications for quieter operation and improved crack resistance. The product line is built around OE-style replacement fitment with performance-oriented slotting for consistent braking behavior.