Centric 121.34072 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.34072

The Centric C-TEK Standard Disc Brake Rotor 121.34072 is engineered for reliable braking performance on select BMW models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for vehicles like the BMW 535i, 545i, 550i, 645Ci, and 650i.

• Compatible with BMW 535i, 545i, 550i, 645Ci, and 650i models
• Part number 121.34072 for precise identification
• Vented disc brake rotor design for improved cooling
• Smooth surface type for consistent pad contact
• Overall diameter of 345 mm (13.583 inches)
• Nominal thickness of 24.000 mm (0.945 inches) with discard thickness at 22.400 mm (0.882 inches)
• Five lug holes with 14.5 mm diameter and 120 mm bolt circle diameter
• Center hole diameter of 75 mm (2.953 inches)
• Weight approximately 8.64 kg (19 lbs)

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 braking applications. This product line focuses on delivering rotors that meet OEM specifications with features such as vented designs and smooth surfaces to ensure effective heat management and consistent braking performance. The 121.34072 rotor fits within this line, providing a reliable replacement option for BMW vehicles requiring vented rotors with precise fitment.

Technical Details and Specifications

This vented rotor features a straight vane style that enhances airflow to reduce heat buildup during braking. The rotor’s nominal thickness is 24.000 mm, with a discard thickness of 22.400 mm, indicating when replacement is necessary to maintain safe braking. The overall height measures 63.2 mm (2.488 inches), and the rotor includes one miscellaneous hole and a vented hat design for improved cooling efficiency. The rotor does not include an ABS tone ring or bearings, so these components must be sourced separately if required.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW 535i, 545i, 550i, 645Ci, and 650i
• Addresses brake fade caused by overheating through vented rotor design
• Resolves uneven braking or pulsation due to rotor thickness wear
• Improves braking consistency with smooth surface finish
• Suitable for vehicles requiring a vented rotor with specific bolt pattern and dimensions

Installation Notes and Tips

• Ensure compatibility with BMW models 535i, 545i, 550i, 645Ci, and 650i before installation
• Check rotor thickness and discard limits to confirm replacement necessity
• Use proper torque specifications on the 5 lug bolts with 14.5 mm diameter
• Verify absence of ABS tone ring and bearings; install separately if needed
• Inspect brake pads and calipers during rotor replacement for optimal performance

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet or exceed OEM standards for fit, form, and function. While specific warranty details for part number 121.34072 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Buyers should consult product documentation or Centric directly for warranty terms related to this rotor.