Centric 121.42049 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Infiniti Q45

The Centric C-TEK Standard Disc Brake Rotor 121.42049 is engineered to meet the braking needs of Infiniti Q45 vehicles. Designed as a solid rotor with precise dimensions, it ensures consistent performance and durability for your braking system.

• Compatible with Infiniti Q45 models
• Part number: 121.42049
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 11.480 inches (291.6 mm)
• Nominal thickness: 0.354 inches (9.0 mm)
• Discard thickness: 0.315 inches (8.0 mm)
• Overall height: 2.520 inches (64.0 mm)
• 5 lug holes with 0.500 inch (12.7 mm) diameter
• Center hole diameter: 2.677 inches (68.0 mm)
• Mounting bolt hole circle diameter: 4.500 inches (114.3 mm)
• Weight approximately 12 lbs (5.45 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers reliable, OEM-quality replacement rotors designed for standard braking applications. This product line focuses on solid rotors with smooth surfaces, providing consistent braking performance and fitment accuracy. The 121.42049 rotor is part of this line, ensuring it meets the specifications required for the Infiniti Q45 without ABS tone ring or additional bearings included.

Product Details and Specifications

This Centric disc brake rotor features a solid design with a smooth surface type, optimized for standard braking systems. The rotor measures 11.480 inches in outside diameter and has a nominal thickness of 0.354 inches, with a discard thickness of 0.315 inches, indicating when replacement is necessary. The overall height is 2.520 inches, and it includes five lug holes sized at 0.500 inches diameter on a 4.500 inch bolt circle. The center hole diameter is 2.677 inches, ensuring proper hub fitment. This rotor does not include an ABS tone ring or bearings, so those components must be sourced separately if required.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Infiniti Q45
• Resolves brake pulsation and vibration issues
• Restores proper rotor thickness for safe braking
• Addresses uneven brake pad wear caused by rotor damage
• Improves braking consistency and pedal feel

Installation Notes and Tips

• Ensure rotor thickness is within discard limits before installation
• Clean rotor surface to remove any protective coatings or debris
• Check compatibility with existing brake pads and hardware
• Torque lug nuts to manufacturer specifications for Infiniti Q45
• Inspect wheel bearings and replace if necessary, as bearings are not included

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 for part number 121.42049 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Proper installation and maintenance are essential to ensure product longevity and performance.