Centric 121.33109 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.33109

The Centric C-TEK Standard Disc Brake Rotor 121.33109 is engineered for reliable braking performance on Audi A8 Quattro and Bentley Continental and S8 models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for demanding driving conditions.

• Compatible with Audi A8 Quattro, Bentley Continental, and Bentley S8
• Part number 121.33109 for precise identification
• Vented disc brake rotor design for improved cooling
• Nominal thickness of 0.862 inches (21.9 mm) and discard thickness of 0.787 inches (20 mm)
• Outside diameter of 13.189 inches (335 mm) for exact fitment
• Floating disc mounting with straight vane style for efficient airflow
• 5 stud/lug holes with 0.602 inch (15.3 mm) diameter
• Center hole diameter of 2.677 inches (68 mm) and mounting bolt hole circle diameter of 4.409 inches (112 mm)
• Weight approximately 17.5 lbs (7.95 kgs)
• ABS tone ring not included; bearings not included

Detailed Product Description

The Centric C-TEK Standard Disc Brake Rotors line is designed to meet or exceed OEM specifications, providing a balance of performance and value. This rotor, part number 121.33109, features a vented design with straight vanes that promote effective heat dissipation, reducing the risk of brake fade during extended use. The smooth surface finish ensures consistent pad contact and braking efficiency. With a nominal thickness of 0.862 inches and a discard thickness of 0.787 inches, this rotor maintains structural integrity and safety throughout its service life.

Its floating disc mounting system allows for slight movement to accommodate thermal expansion, which helps prevent warping. The rotor’s dimensions, including a 13.189-inch outside diameter and a 5-lug hole pattern, are tailored for direct replacement on compatible Audi and Bentley models, ensuring proper fit and function.

Applications and Problem Solving

• Replacement for worn or warped rotors on Audi A8 Quattro and Bentley Continental/S8
• Addresses brake noise and vibration issues caused by uneven rotor surfaces
• Improves braking performance by restoring proper rotor thickness and surface condition
• Helps prevent brake fade through enhanced heat dissipation with vented design
• Suitable for vehicles experiencing rotor cracking or scoring

Installation Notes and Tips

• Verify compatibility with vehicle make and model before installation
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Clean rotor surface before installation to remove any protective coatings
• Torque lug nuts to manufacturer specifications to avoid rotor distortion
• Check for proper rotor runout after installation to prevent vibration

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards, ensuring durability and consistent braking performance. While specific warranty details for part number 121.33109 are not provided here, Centric typically offers coverage against defects in materials and workmanship. It is recommended to consult the product documentation or Centric directly for warranty terms related to this rotor.