Centric 121.33087 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.33087

The Centric C-TEK Standard Disc Brake Rotor 121.33087 is engineered for reliable braking performance on Audi S4 models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for everyday driving conditions.

• Compatible with Audi S4 vehicles
• Part number 121.33087 for precise identification
• Vented disc brake rotor design for improved cooling
• Overall diameter of 345 mm (13.583 inches)
• Nominal thickness of 30 mm (1.181 inches) with discard thickness at 28 mm (1.102 inches)
• Floating disc mounting style with straight vane design
• 5 stud/lug holes with 15 mm (0.591 inches) diameter
• Center hole diameter of 68 mm (2.677 inches)
• Weight approximately 11.59 kg (25.5 lbs)
• ABS tone ring not included

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric focuses on delivering OEM-equivalent replacement rotors that meet factory specifications. This product line emphasizes consistent performance and fitment accuracy, making it suitable for routine maintenance and brake system repairs on vehicles like the Audi S4. The 121.33087 rotor maintains the original equipment dimensions and vented design to ensure proper heat management and braking efficiency.

Detailed Product Description

This Centric disc brake rotor features a vented design with straight vanes that facilitate effective airflow to reduce heat buildup during braking. The smooth surface finish supports even pad contact and wear. With a nominal thickness of 30 mm and a discard thickness of 28 mm, this rotor provides a clear service life indicator to maintain safe braking performance. The floating disc mounting style allows for slight movement to accommodate thermal expansion and reduce stress on the braking system. The rotor’s 345 mm outside diameter and 68 mm center hole diameter ensure proper fitment on Audi S4 models equipped with 5 lug holes spaced on a 112 mm bolt circle diameter.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing reduced braking efficiency due to rotor thickness below discard limits
• Resolving noise or vibration issues related to uneven rotor surfaces
• Upgrading to OEM-equivalent vented rotors for improved heat dissipation
• Ensuring proper fitment and compatibility with Audi S4 brake systems

Installation Notes and Tips

• Verify rotor dimensions and part number 121.33087 before installation
• Inspect brake pads and replace if worn to ensure optimal rotor performance
• Clean rotor surface to remove any protective coatings or debris prior to mounting
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Check for proper alignment of the floating disc mounting to prevent uneven wear

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details for part number 121.33087 should be confirmed with the distributor or installer, Centric generally provides coverage against defects in materials and workmanship to support long-term reliability on Audi S4 vehicles.