Centric 121.34036 Disc Brake Rotor - Rear Left

Reliable Disc Brake Rotor for BMW M3 and Z3

The Centric C-TEK Standard Disc Brake Rotor 121.34036 is engineered to provide consistent braking performance for BMW M3 and Z3 models. Designed with precision, this vented rotor ensures effective heat dissipation and smooth braking under various driving conditions.

• Compatible with BMW M3 and Z3 models
• Vented disc brake rotor with curved vane design for improved cooling
• Nominal thickness of 0.795 inches (20.200 mm) and discard thickness of 0.724 inches (18.400 mm)
• Overall height of 2.409 inches (61.200 mm) and outside diameter of 12.283 inches (312.000 mm)
• 5 lug holes with a bolt circle diameter of 4.724 inches (120.000 mm)
• Center hole diameter of 2.953 inches (75.000 mm)
• Solid smooth surface type for consistent pad contact
• Weight approximately 15.48 lbs (7.04 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers reliable, OEM-quality replacement rotors designed to meet or exceed factory specifications. This product line focuses on providing durable, vented rotors that maintain proper thickness and heat dissipation characteristics, ensuring safe and consistent braking performance for vehicles like the BMW M3 and Z3.

Product Details and Specifications

This Centric disc brake rotor features a vented design with curved vanes that enhance airflow and cooling during braking, reducing the risk of brake fade. The rotor has a nominal thickness of 0.795 inches (20.200 mm) and a discard thickness of 0.724 inches (18.400 mm), indicating when replacement is necessary to maintain braking efficiency. The smooth surface type ensures even pad wear and reliable stopping power. With an overall height of 2.409 inches (61.200 mm) and an outside diameter of 12.283 inches (312.000 mm), this rotor fits precisely on compatible BMW models. The 5-lug hole pattern with a 4.724-inch (120.000 mm) bolt circle diameter and a center hole diameter of 2.953 inches (75.000 mm) ensures proper mounting and alignment.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW M3 and Z3
• Addresses brake pulsation and vibration issues
• Improves heat dissipation to reduce brake fade during heavy use
• Restores proper rotor thickness for consistent braking performance
• Eliminates uneven pad wear caused by damaged rotor surfaces

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is above the discard thickness specification of 0.724 inches (18.400 mm) to maintain safety standards. Use proper torque specifications for the 5 lug nuts on the 4.724-inch (120.000 mm) bolt circle. This rotor does not include ABS tone rings or bearings, so confirm compatibility with your vehicle’s existing components. Proper bedding-in of brake pads after installation is recommended for optimal performance.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards, ensuring durability and reliable braking performance. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Refer to Centric’s official warranty policy for complete information.