Centric 121.42058 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.42058

The Centric C-TEK Standard Disc Brake Rotor 121.42058 is engineered for reliable braking performance on Infiniti J30 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 J30 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 2.524 inches (64.100 mm) and outside diameter of 11.492 inches (291.900 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 2.681 inches (68.100 mm) and three miscellaneous holes
• Floating/dih disc mounting with straight vane style for effective ventilation
• Weight approximately 14.5 lbs (6.59 kgs)
• ABS tone ring not included; bearings not included

Product Line Details: C-TEK Standard Disc Brake Rotors

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 quality materials and precise manufacturing. The 121.42058 rotor maintains consistent thickness and smooth surface finish to ensure proper pad contact and braking efficiency, making it suitable for daily driving applications on compatible Infiniti models.

Technical Description and Specifications

This disc brake rotor features a vented design with straight vanes that promote airflow to reduce heat buildup during braking. The nominal thickness of 0.630 inches (16.000 mm) ensures structural integrity, while the discard thickness of 0.551 inches (14.000 mm) indicates the minimum safe thickness before replacement is necessary. The rotor’s overall height of 2.524 inches (64.100 mm) and outside diameter of 11.492 inches (291.900 mm) are engineered to fit precisely on Infiniti J30 and Q45 models. The five lug holes with a 4.500 inch (114.300 mm) bolt circle diameter and 0.500 inch (12.700 mm) diameter accommodate standard mounting hardware. The rotor uses a floating/dih mounting style and includes three miscellaneous holes for alignment or weight reduction.

Applications and Problem Solving

• Replacement for worn or warped rotors on Infiniti J30 and Q45
• Addresses brake pulsation caused by uneven rotor thickness
• Improves braking consistency by restoring proper rotor thickness and surface
• Helps reduce brake fade through vented rotor design
• Suitable for routine maintenance and brake system repairs

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets discard specifications
• Clean rotor surface to remove any protective coatings or debris prior to mounting
• Check compatibility with vehicle ABS system; this rotor does not include an ABS tone ring
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• 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 OEM standards for fit, form, and function. While specific warranty details for part number 121.42058 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult product documentation or Centric directly for warranty terms related to this rotor.