Centric 121.40056 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Acura and Honda Vehicles

The Centric C-TEK Standard Disc Brake Rotor 121.40056 is engineered to provide consistent braking performance for select Acura and Honda models. Designed specifically for vehicles like the Civic, CR-Z, and RSX, this rotor ensures compatibility and dependable stopping power.

• Part Number: 121.40056
• Compatible with Acura and Honda Civic, CR-Z, RSX models
• Vented disc brake rotor with smooth surface
• Outside diameter: 10.295 inches (261.5 mm)
• Nominal thickness: 0.827 inches (21.0 mm)
• Discard thickness: 0.748 inches (19.0 mm)
• Overall height: 1.850 inches (47.0 mm)
• Floating disc mounting design
• 5 stud/lug holes with 0.496 inch (12.6 mm) diameter
• Hat inner diameter: 5.512 inches (140.0 mm)
• Straight vane style for effective heat dissipation
• Weight: 11.5 lbs (5.22 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 everyday driving conditions. These rotors feature a vented design to improve heat dissipation and maintain braking efficiency. The smooth surface finish supports consistent pad contact and wear. This product line is engineered to meet or exceed OEM specifications, making it a suitable replacement for factory-installed rotors on compatible Acura and Honda vehicles.

Product Details and Specifications

This Centric disc brake rotor features a vented design with straight vanes that help reduce heat buildup during braking, which is critical for maintaining performance and rotor longevity. The rotor’s nominal thickness is 0.827 inches (21.0 mm), with a discard thickness of 0.748 inches (19.0 mm), indicating when replacement is necessary to ensure safe braking. The overall height measures 1.850 inches (47.0 mm), and the outside diameter is 10.295 inches (261.5 mm), matching OEM dimensions for proper fitment.

The rotor mounts using a floating disc design and includes five stud/lug holes with a diameter of 0.496 inches (12.6 mm) arranged on a 4.5 inch (114.3 mm) bolt circle diameter. The hat inner diameter is 5.512 inches (140.0 mm), and the rotor weighs approximately 11.5 lbs (5.22 kgs). This rotor does not include an ABS tone ring or bearings.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Acura Civic, Honda CR-Z, and RSX
• Improves braking performance by restoring proper rotor thickness and surface
• Addresses brake pulsation caused by uneven rotor wear
• Helps reduce brake fade through vented rotor design
• Restores smooth braking feel and reduces noise

Installation Notes and Tips

• Ensure rotor thickness is within discard limits before installation
• Clean rotor surface and hub mounting area to prevent uneven wear
• Use proper torque specifications for lug nuts 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 rotor performance

Quality Assurance and Warranty

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