Centric 121.44139 Disc Brake Rotor - Front Right

Overview of Centric C-TEK Standard Disc Brake Rotor 121.44139

The Centric C-TEK Standard Disc Brake Rotor 121.44139 is engineered for reliable braking performance on Lexus GS300 and IS250 models. Designed as a vented rotor with a smooth surface, it offers consistent heat dissipation and durability for everyday driving conditions.

• Compatible with Lexus GS300 and IS250
• Part number 121.44139 for precise identification
• Vented disc brake rotor design for improved cooling
• Nominal thickness of 1.260 inches (32.000 mm)
• Discard thickness at 1.181 inches (30.000 mm)
• Overall height of 2.000 inches (50.800 mm)
• Outside diameter measuring 11.646 inches (295.800 mm)
• Floating disc mounting with 5 lug holes (0.575 inches diameter)
• Straight vane style for effective airflow
• Weight approximately 19.5 lbs (8.86 kgs)

Detailed Product Description

This Centric C-TEK Standard Disc Brake Rotor 121.44139 is a vented rotor designed to maintain optimal braking performance by efficiently dissipating heat generated during braking. The smooth surface finish ensures consistent pad contact and reduces uneven wear. With a nominal thickness of 1.260 inches and a discard thickness of 1.181 inches, this rotor meets the specifications required for safe and effective braking on Lexus GS300 and IS250 vehicles. The rotor features a floating disc mounting system and a 5-lug hole pattern with a 114.3 mm bolt circle diameter, ensuring proper fitment and secure installation. The straight vane design promotes airflow through the rotor, helping to prevent overheating during extended use.

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors manufactured to meet or exceed OEM specifications. This product line focuses on providing reliable, direct replacement rotors with consistent dimensions and quality materials. The 121.44139 rotor is part of this line, delivering dependable performance and fitment for Lexus GS300 and IS250 models without additional features such as ABS tone rings or included bearings.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Lexus GS300 and IS250
• Resolves brake pulsation caused by uneven rotor surfaces
• Addresses reduced braking efficiency due to rotor thickness below discard limits
• Improves heat dissipation to prevent brake fade during extended use
• Restores proper rotor dimensions for safe and consistent braking

Installation Notes and Tips

• Verify rotor thickness before installation; replace if below 1.181 inches (30.000 mm)
• Ensure proper cleaning of rotor surface to remove any protective coatings
• Check compatibility with vehicle lug pattern: 5 lug holes, 0.575 inches diameter
• 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 manufactures the C-TEK Standard Disc Brake Rotors to meet strict quality standards, ensuring consistent dimensions and material integrity. While specific warranty details for part number 121.44139 should be confirmed with the supplier, Centric typically offers limited warranties covering defects in materials and workmanship. This rotor is produced without ABS tone rings or included bearings, matching OEM specifications for Lexus GS300 and IS250 applications.