Centric 121.66045 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.66045

The Centric C-TEK Standard Disc Brake Rotor 121.66045 is engineered for reliable braking performance on select GM trucks and SUVs. Designed to meet OEM specifications, this vented rotor provides consistent stopping power for vehicles like the Chevrolet Silverado 1500 and Cadillac Escalade.

• Vented disc brake rotor with smooth surface finish
• Nominal thickness of 1.181 inches (30.000 mm) and discard thickness of 1.122 inches (28.500 mm)
• Overall height of 3.760 inches (95.500 mm) and outside diameter of 12.980 inches (329.700 mm)
• 6 lug holes with 0.650 inch (16.500 mm) diameter and 5.500 inch (139.700 mm) bolt circle diameter
• Compatible with ABS systems (tone ring not included)
• Weight approximately 20.25 lbs (9.2 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors manufactured to meet or exceed OEM standards for fit, form, and function. This product line focuses on providing dependable braking components with precise dimensions and quality materials, ensuring compatibility with a range of GM vehicles. The 121.66045 rotor is part of this line, delivering consistent performance for trucks and SUVs requiring vented rotors with specific thickness and diameter specifications.

Detailed Product Description and Specifications

This Centric disc brake rotor features a vented design with straight vanes to optimize heat dissipation during braking. The smooth surface type ensures even pad contact and reduces noise. With a nominal thickness of 1.181 inches and a discard thickness of 1.122 inches, this rotor maintains safe braking performance throughout its service life. The rotor’s overall height is 3.760 inches, and it has an outside diameter of 12.980 inches, making it suitable for heavy-duty applications. The 6-lug hole pattern with a 5.500 inch bolt circle diameter matches factory specifications for vehicles such as the GMC Sierra 1500 and Chevrolet Tahoe. This rotor does not include bearings or an ABS tone ring, so it is intended for use with compatible factory components.

Compatible Vehicles and Common Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500, Silverado 1500, Suburban 1500, Tahoe
• GMC Sierra 1500, Yukon, Yukon XL 1500
• Chevrolet Express 1500, GMC Savana 1500

This rotor is designed to address issues such as brake rotor wear, vibration during braking, and reduced stopping power caused by rotor warping or thinning.

• Worn or warped rotors causing brake pulsation
• Reduced braking efficiency due to rotor thickness below discard limits
• Excessive heat buildup from solid rotors in heavy-duty use
• Uneven pad wear from surface imperfections

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it is above the discard thickness of 1.122 inches. Clean the rotor surface to remove any protective coatings or debris. Verify the 6-lug bolt pattern and 5.500 inch bolt circle diameter match the vehicle hub. Use proper torque specifications for lug nuts to avoid rotor distortion. This rotor is compatible with floating or direct mount disc configurations.

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM quality standards, ensuring reliable fit and function. While specific warranty details are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult the product packaging or Centric’s official documentation for exact warranty terms.