Centric 121.33033 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.33033

The Centric C-TEK Standard Disc Brake Rotor 121.33033 is engineered for reliable braking performance on select Audi models. Designed specifically for Audi S4, S6, and V8 Quattro vehicles, this vented rotor provides consistent heat dissipation and smooth braking response.

• Compatible with Audi S4, S6, and V8 Quattro models
• Part number 121.33033 for precise identification
• Vented disc design for improved cooling
• Nominal thickness of 0.787 inches (20.000 mm)
• Discard thickness at 0.709 inches (18.000 mm)
• Overall height of 2.331 inches (59.200 mm)
• Outside diameter measuring 10.551 inches (268.000 mm)
• Floating disc mounting style with straight vane design
• Five stud/lug holes with 0.610 inch (15.500 mm) diameter
• Smooth surface type for consistent pad contact

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for everyday driving conditions. These rotors are designed to meet or exceed OEM specifications, providing dependable braking performance without unnecessary features. The 121.33033 rotor maintains the standard smooth surface and vented design typical of this product line, ensuring effective heat dissipation and rotor longevity for Audi vehicles.

Technical Specifications and Features

This disc brake rotor features a vented design with straight vanes that promote efficient airflow to reduce heat buildup during braking. The rotor’s nominal thickness is 0.787 inches (20.000 mm), with a discard thickness of 0.709 inches (18.000 mm), indicating when replacement is necessary to maintain safe braking. The overall height of 2.331 inches (59.200 mm) and outside diameter of 10.551 inches (268.000 mm) are engineered to fit the specified Audi models precisely. The floating disc mounting style allows for slight movement to reduce stress and improve rotor life. The rotor includes five stud/lug holes with a diameter of 0.610 inches (15.500 mm) and a mounting bolt hole circle diameter of 4.409 inches (112.000 mm).

Applications and Problem Solving

• Replacement for worn or warped rotors on Audi S4, S6, and V8 Quattro
• Addresses brake fade caused by overheating through vented design
• Restores proper rotor thickness for consistent braking performance
• Eliminates vibrations and noise from uneven rotor surfaces
• Ensures compatibility with factory brake components for safe operation

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is above the discard limit of 0.709 inches (18.000 mm) to maintain safety standards. Use proper torque specifications for mounting bolts and confirm the floating disc mounting style is compatible with your vehicle’s brake system. This rotor does not include bearings or an ABS tone ring, so verify existing components are in good condition before installation.

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Using part number 121.33033 ensures you receive a rotor designed specifically for Audi S4, S6, and V8 Quattro models, supporting reliable braking performance.