Centric 121.44142 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.44142

The Centric C-TEK Standard Disc Brake Rotor 121.44142 is engineered for reliable braking performance on Lexus IS250 models. Designed as a solid rotor with a smooth surface, it meets precise specifications to ensure consistent stopping power and durability.

• Compatible with Lexus IS250 vehicles
• Part number: 121.44142
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 11.457 inches (291.0 mm)
• Nominal thickness: 0.394 inches (10.0 mm)
• Discard thickness: 0.335 inches (8.5 mm)
• Overall height: 2.406 inches (61.1 mm)
• 5 lug holes with 4.5 inch (114.3 mm) bolt circle diameter
• Center hole diameter: 2.441 inches (62.0 mm)
• Weight approximately 10.5 lbs (4.77 kgs)

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric offers direct replacement rotors designed to meet or exceed OEM specifications. This product line focuses on providing solid rotors with smooth surfaces for consistent brake pad contact and reliable braking performance. The 121.44142 rotor is part of this line, ensuring compatibility and quality for Lexus IS250 brake systems.

Technical Specifications and Features

This Centric rotor features a solid design with a smooth surface type, which helps maintain even pad wear and consistent braking feel. The rotor’s nominal thickness is 0.394 inches (10.0 mm), with a discard thickness of 0.335 inches (8.5 mm), indicating when replacement is necessary. The overall height measures 2.406 inches (61.1 mm), and the outside diameter is 11.457 inches (291.0 mm), matching factory dimensions for proper fitment. It includes five stud/lug holes with a diameter of 0.567 inches (14.4 mm) arranged on a 4.5 inch (114.3 mm) bolt circle diameter. The center hole diameter is 2.441 inches (62.0 mm). This rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Lexus IS250
• Addresses brake pulsation and vibration issues
• Restores proper rotor thickness for safe braking
• Eliminates uneven pad wear caused by rotor surface imperfections
• Improves braking consistency and pedal feel

Installation Notes and Tips

When installing the Centric C-TEK Standard Disc Brake Rotor 121.44142, ensure the rotor surface is clean and free of contaminants. Verify the rotor thickness before installation to confirm it is above the discard thickness of 0.335 inches (8.5 mm). Use proper torque specifications for the 5 lug nuts on the 4.5 inch bolt circle. 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 to ensure optimal braking performance.

Quality Assurance and Warranty

Centric manufactures the C-TEK Standard Disc Brake Rotors to meet or exceed OEM standards for fit, form, and function. Each rotor undergoes quality control inspections to ensure dimensional accuracy and surface finish. While specific warranty details 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.