Centric 121.42072 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.42072

The Centric C-TEK Standard Disc Brake Rotor 121.42072 is engineered for reliable braking performance on Infiniti M45 and Q45 models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for everyday driving conditions.

• Compatible with Infiniti M45 and Q45 vehicles
• Vented disc brake rotor design for improved cooling
• Nominal thickness of 0.630 inches (16.000 mm) and discard thickness of 0.551 inches (14.000 mm)
• Overall height of 2.539 inches (64.500 mm) and outside diameter of 11.496 inches (292.000 mm)
• Five lug holes with 0.500 inch (12.700 mm) diameter and 4.500 inch (114.300 mm) bolt circle diameter
• Center hole diameter of 2.677 inches (68.000 mm)
• Solid mounting with floating/dih disc mounting type
• Weight approximately 13 lbs (5.910 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 providing reliable braking performance with consistent dimensions and quality materials. The 121.42072 rotor maintains the proper thickness and vented design to ensure effective heat dissipation and long service life, making it suitable for daily driving on Infiniti M45 and Q45 models.

Detailed Product Description

This Centric disc brake rotor features a vented design with straight vanes to enhance airflow and reduce heat buildup during braking. The smooth surface finish helps minimize brake pad wear and noise. With a nominal thickness of 0.630 inches and a discard thickness of 0.551 inches, this rotor ensures safe replacement intervals. The rotor’s overall height and outside diameter are engineered to match factory specifications, ensuring proper fitment and brake system performance. The five lug holes and mounting bolt circle diameter correspond to the Infiniti M45 and Q45 wheel hub configurations, allowing for straightforward installation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing rotor thickness below manufacturer discard limits
• Resolving excessive brake noise due to uneven rotor surfaces
• Improving heat dissipation to prevent brake fade during extended use
• Restoring proper rotor dimensions for safe braking performance

Installation Notes and Tips

Ensure the rotor surface is clean and free of rust or debris before installation. Verify the rotor thickness with a micrometer to confirm it meets minimum specifications. Use proper torque settings on lug nuts to avoid rotor warping. Since this rotor does not include bearings or an ABS tone ring, reuse existing components if applicable. It is recommended to replace brake pads simultaneously for optimal braking efficiency.

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 121.42072 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Refer to Centric’s official documentation for complete warranty information.