Centric 121.34026 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.34026

The Centric C-TEK Standard Disc Brake Rotor 121.34026 is engineered for reliable braking performance on select BMW models. Designed specifically for BMW 740i, 740iL, and 750iL vehicles, this vented disc brake rotor offers consistent stopping power and durability.

• Compatible with BMW 740i, 740iL, and 750iL models
• Part number 121.34026 for precise fitment
• Vented rotor design for improved heat dissipation
• Nominal thickness of 0.783 inches (19.900 mm)
• Discard thickness at 0.724 inches (18.400 mm)
• Overall height of 2.681 inches (68.100 mm)
• Outside diameter of 11.811 inches (300.000 mm)
• Solid smooth surface type for consistent pad contact
• Five stud/lug holes with 0.591 inch (15.000 mm) diameter
• Center hole diameter of 2.953 inches (75.000 mm)
• Mounting bolt hole circle diameter of 4.724 inches (120.000 mm)
• Weight approximately 14.59 lbs (6.63 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric is designed to meet or exceed OEM specifications for standard replacement rotors. This product line focuses on delivering reliable braking performance with a vented rotor design that helps reduce heat buildup during braking. The smooth surface finish ensures even pad wear and consistent braking feel, making it suitable for daily driving conditions on BMW 740i, 740iL, and 750iL models.

Detailed Product Description

The Centric C-TEK Standard Disc Brake Rotor 121.34026 features a vented rotor construction that enhances heat dissipation, reducing the risk of brake fade during extended use. With a nominal thickness of 0.783 inches (19.900 mm) and a discard thickness of 0.724 inches (18.400 mm), this rotor maintains structural integrity and performance throughout its service life. The rotor's overall height of 2.681 inches (68.100 mm) and outside diameter of 11.811 inches (300.000 mm) ensure proper fitment and compatibility with the specified BMW models. The smooth surface type promotes even brake pad contact, minimizing noise and vibration. This rotor includes five stud/lug holes with a diameter of 0.591 inches (15.000 mm) and a mounting bolt hole circle diameter of 4.724 inches (120.000 mm), designed for secure installation. Note that this rotor does not include an ABS tone ring or bearings.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on BMW 740i, 740iL, and 750iL
• Resolves brake pulsation caused by uneven rotor surface
• Addresses reduced braking efficiency due to rotor thickness below discard limits
• Improves heat management to prevent brake fade during extended braking
• Eliminates noise and vibration from damaged or uneven rotors

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (0.724 inches) before installation
• Clean rotor surface and hub mounting area to prevent uneven contact
• Use proper torque specifications for mounting bolts to avoid rotor warping
• Check compatibility with vehicle ABS system as this rotor does not include an ABS tone ring
• Inspect brake pads and replace if worn to ensure optimal braking performance

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details for part number 121.34026 are not provided, Centric typically offers coverage against defects in materials and workmanship. It is recommended to consult product documentation or authorized sources for exact warranty terms.