Centric 121.34069 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.34069

The Centric C-TEK Standard Disc Brake Rotor 121.34069 is engineered for reliable braking performance on BMW Z4 models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for everyday driving conditions.

• Compatible with BMW Z4 vehicles
• Vented disc brake rotor design for improved cooling
• Nominal thickness of 0.748 inches (19.000 mm)
• Discard thickness at 0.685 inches (17.400 mm)
• Outside diameter measures 11.575 inches (294.000 mm)
• Overall height of 2.953 inches (75.000 mm)
• Five lug holes with 0.559 inch (14.200 mm) diameter
• Center hole diameter of 2.953 inches (75.000 mm)
• Includes one miscellaneous hole and straight vane style for airflow
• Does not include ABS tone ring or bearings

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet or exceed OEM specifications for fit, form, and function. This product line focuses on providing solid and vented rotors with smooth surfaces to ensure consistent braking performance and ease of installation. The 121.34069 rotor is part of this line, delivering a vented design that helps maintain optimal operating temperatures during braking for BMW Z4 applications.

Technical Description and Specifications

This disc brake rotor features a vented design with straight vanes to promote effective heat dissipation, reducing the risk of brake fade during extended use. The rotor’s nominal thickness is 0.748 inches (19.000 mm), with a discard thickness of 0.685 inches (17.400 mm), indicating when replacement is necessary. The outside diameter of 11.575 inches (294.000 mm) and overall height of 2.953 inches (75.000 mm) ensure proper fitment on compatible BMW Z4 models. The rotor includes five lug holes with a diameter of 0.559 inches (14.200 mm) and a mounting bolt hole circle diameter of 4.724 inches (120.000 mm). It does not include an ABS tone ring or bearings, so these components must be sourced separately if required.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW Z4 vehicles
• Addresses brake pulsation caused by uneven rotor surfaces
• Improves braking consistency by restoring proper rotor thickness
• Helps reduce brake fade through vented rotor design
• Suitable for routine maintenance and brake system overhauls

Installation Notes and Tips

• Ensure rotor thickness is within discard limits before installation
• Clean rotor surface to remove any protective coatings or debris
• Verify compatibility with BMW Z4 model year and brake system specifications
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Check for proper alignment of mounting bolt holes and center hole diameter

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for quality and durability. While specific warranty details for part number 121.34069 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult Centric’s official warranty policy or authorized distributors for precise coverage information.