Centric 121.44189 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Lexus GS and IS Models

The Centric C-TEK Standard Disc Brake Rotor 121.44189 is engineered to provide consistent braking performance for select Lexus vehicles. Designed specifically for models like the GS200t, GS300, IS200t, and RC350, this vented rotor ensures effective heat dissipation and durability under normal driving conditions.

• Compatible with Lexus GS200t, GS300, GS350, GS450h, IS200t, IS300, IS350, RC200t, RC300, and RC350
• Part number 121.44189 for precise fitment
• Vented disc design with straight vane style for improved cooling
• Nominal thickness of 0.709 inches (18.000 mm) and discard thickness of 0.650 inches (16.500 mm)
• Overall height of 2.654 inches (67.400 mm) and outside diameter of 12.205 inches (310.000 mm)
• 5 lug holes with a diameter of 0.567 inches (14.400 mm) and mounting bolt hole circle diameter of 4.500 inches (114.300 mm)
• Center hole diameter of 2.441 inches (62.000 mm)
• Solid smooth surface type without ABS tone ring included
• Weight approximately 15 lbs (6.8 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers reliable replacement rotors designed to meet or exceed OEM specifications. This product line focuses on providing rotors with consistent thickness and precise dimensions to ensure proper fit and function. The 121.44189 rotor is a vented type with straight vanes, which helps maintain optimal braking performance by dissipating heat effectively during regular driving conditions.

Product Details and Specifications

This disc brake rotor features a vented design with straight vanes to enhance airflow and cooling, reducing the risk of brake fade. The smooth surface type ensures even pad contact and wear. With a nominal thickness of 0.709 inches and a discard thickness of 0.650 inches, this rotor maintains structural integrity throughout its service life. The overall height and outside diameter are engineered to match exact OEM dimensions for a secure fit on compatible Lexus models. The rotor includes five lug holes and a mounting bolt hole circle diameter that aligns with factory specifications, ensuring straightforward installation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing reduced braking efficiency due to rotor thickness below discard limits
• Resolving noise or vibration issues related to uneven rotor surfaces
• Upgrading to vented rotors for improved heat dissipation in daily driving
• Ensuring proper rotor fitment for Lexus GS and IS series vehicles

Installation Notes and Tips

Before installation, verify rotor thickness and compare with discard specifications to ensure safety. Clean the rotor surface to remove any protective coatings or debris. Use proper torque specifications for lug nuts and mounting bolts to avoid rotor warping. Since this rotor does not include bearings or an ABS tone ring, ensure these components are inspected and serviced separately if applicable. Professional installation is recommended for optimal brake system 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 121.44189 should be confirmed with the supplier, Centric generally offers coverage against defects in materials and workmanship. This rotor is designed to provide reliable braking performance when installed and maintained according to manufacturer guidelines.