Stoptech 126.66065SL Disc Brake Rotor - Rear Left

StopTech Slotted Rear Left Rotor for GM SUVs and Trucks

The StopTech Sport Slotted Disc Brake Rotor, part number 126.66065SL, is a direct replacement rear left 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 a finished look behind the wheel.

Compatible With 2007-2020 Chevrolet Tahoe, 2007-2020 GMC Yukon, 2009-2020 Cadillac Escalade, and other listed GM applications, this rotor uses a slotted surface to help manage heat and brake dust while improving bite in wet and dry conditions.

Key Features

• Part number 126.66065SL
• Rear left disc brake rotor for factory brake systems and stock calipers
• Slotted surface helps disperse heat and brake dust
• Helps reduce pad glazing and improve initial bite
• Black e-coating helps protect against corrosion
• High carbon metallurgy in most applications for quieter operation and improved crack resistance
• Vented, 1-piece direct replacement design
• Outside diameter: 13.583 in. / 345.000 mm
• Nominal thickness: 0.787 in. / 20.000 mm
• Discard thickness: 0.728 in. / 18.500 mm

Product Details

StopTech Sport Slotted Disc Brake Rotors are engineered as OE-style replacement brake discs for vehicles that use stock calipers and factory brake hardware. The straight vane, vented construction supports heat management, while the slotted face helps keep the pad surface cleaner and more consistent during repeated stops. The coated hat finish and black e-coating add corrosion protection, which is useful for daily-driven trucks and SUVs exposed to road moisture and winter conditions.

This rotor is a strong fitment-based choice for rear left brake service on Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac Escalade, Chevrolet Suburban 1500, and related applications. The StopTech 126.66065SL is also listed for 2008-2009 GM platform variations with specific bracket and caliper bracket notes, so matching the vehicle notes is important before ordering.

What This Rotor Helps Address

• Brake fade during repeated stops
• Uneven pad glazing on the rotor face
• Excess brake dust buildup on the braking surface
• Corrosion on exposed rotor surfaces
• Noisy or inconsistent braking from worn rear rotors

Installation Notes and Fitment Tips

Fits 2009-2020 Cadillac Escalade, rear left; 2009-2020 Cadillac Escalade ESV, rear left; 2007-2020 Chevrolet Tahoe, rear left; 2007-2020 GMC Yukon, rear left; and 2015-2020 GMC Yukon XL, rear left. Additional fitments include 2008-2018 Chevrolet Silverado 1500, rear left; 2009-2018 GMC Sierra 1500, rear left; 2009-2014 Chevrolet Suburban 1500, rear left; and 2009-2014 GMC Yukon XL 1500, rear left.

For 2007-2008 and 2019 applications, review the listed notes carefully, including bracket cast numbers and old body style references. Confirm rotor dimensions, hub fit, and rear left position before installation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

StopTech Sport Slotted Disc Brake Rotors use a coated finish and high carbon metallurgy in most applications to support corrosion resistance, quieter operation, and improved crack resistance. The 1-piece direct replacement design is intended to match factory brake system requirements while adding performance-focused slotting for consistent braking.