Centric 121.34071 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.34071

The Centric C-TEK Standard Disc Brake Rotor 121.34071 is engineered for reliable braking performance on select BMW models. Designed as a vented disc brake rotor, it offers consistent heat dissipation and smooth surface contact for effective stopping power.

• Compatible with BMW 535i, 545i, 550i, 645Ci, and 650i models
• Part number: 121.34071
• Vented rotor design with straight vane style for improved cooling
• Nominal thickness of 1.181 inches (30.000 mm) and discard thickness of 1.118 inches (28.400 mm)
• Overall height of 3.035 inches (77.100 mm) and outside diameter of 13.701 inches (348.000 mm)
• Floating disc mounting with 5 lug holes, each 0.575 inches (14.600 mm) in diameter
• Smooth surface type without ABS tone ring included
• Weight approximately 22 lbs (10 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for standard replacement needs. This product line focuses on delivering rotors that meet OEM specifications, ensuring proper fitment and reliable braking performance. The 121.34071 rotor features a vented hat design and straight vane style to maintain optimal operating temperatures during braking, which is essential for the BMW 535i, 545i, 550i, 645Ci, and 650i models it supports.

Product Details and Specifications

This disc brake rotor is designed with a vented construction to enhance heat dissipation, reducing the risk of brake fade during extended use. The smooth surface type ensures consistent pad contact and braking efficiency. The rotor’s floating disc mounting and single miscellaneous hole contribute to proper alignment and secure installation. With a center hole diameter of 3.110 inches (79.000 mm) and a mounting bolt hole circle diameter of 4.724 inches (120.000 mm), it fits precisely on the specified BMW models. The rotor does not include bearings or an ABS tone ring, so those components must be sourced separately if required.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 535i, 545i, 550i, 645Ci, and 650i
• Addresses brake pulsation caused by uneven rotor thickness
• Improves braking performance by restoring proper rotor thickness and surface condition
• Helps reduce brake noise and vibration associated with damaged rotors
• Supports safe braking by maintaining correct rotor dimensions and venting

Installation Notes and Tips

• Verify rotor thickness before installation; discard if below 1.118 inches (28.400 mm)
• Ensure mounting surfaces are clean and free of debris for proper fitment
• Use proper torque specifications on lug nuts to avoid rotor warping
• Check compatibility with existing brake pads and hardware
• Inspect related components such as bearings and ABS sensors, as this rotor does not include them

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 121.34071 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult the product packaging or Centric’s official documentation for exact warranty terms.