Centric 121.51021 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Hyundai and Kia Vehicles

The Centric C-TEK Standard Disc Brake Rotor 121.51021 is engineered to provide consistent braking performance for select Hyundai and Kia models. Designed as a solid rotor with a smooth surface, it ensures dependable stopping power and durability.

• Compatible with Hyundai Azera, Sonata, Tucson and Kia Cadenza, Optima models
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 11.181 inches (284 mm)
• Nominal thickness: 0.394 inches (10.000 mm)
• Discard thickness: 0.331 inches (8.400 mm)
• Overall height: 2.146 inches (54.500 mm)
• 5 lug holes with 0.492 inch (12.500 mm) diameter
• Center hole diameter: 2.992 inches (76.000 mm)
• Mounting bolt hole circle diameter: 4.500 inches (114.300 mm)
• Weight approximately 10.3 lbs (4.68 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 to meet or exceed factory specifications. This product line focuses on solid rotors with smooth surfaces, providing consistent braking performance and fitment for a range of vehicles including Hyundai and Kia models. The 121.51021 rotor is part of this line, ensuring compatibility and durability for your vehicle’s braking system.

Product Details and Specifications

This Centric disc brake rotor features a solid design with a smooth surface type, optimized for standard braking applications. The rotor measures 11.181 inches in outside diameter and has a nominal thickness of 0.394 inches, with a discard thickness of 0.331 inches, indicating when replacement is necessary. The overall height is 2.146 inches, and it includes five lug holes sized at 0.492 inches diameter, arranged on a 4.5-inch bolt circle. The center hole diameter is 2.992 inches, ensuring proper mounting on compatible Hyundai and Kia vehicles. This rotor does not include an ABS tone ring or bearings and weighs approximately 10.3 pounds.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Hyundai Azera, Sonata, Tucson and Kia Cadenza, Optima
• Resolves brake pulsation and vibration caused by uneven rotor surfaces
• Addresses reduced braking efficiency due to rotor thickness below discard limits
• Eliminates noise and squealing from damaged or scored rotors
• Restores proper rotor dimensions for safe and effective braking

Installation Notes and Tips

• Ensure rotor thickness is measured before installation to confirm discard limits
• Clean rotor surface and hub mounting area to prevent uneven contact
• Torque lug nuts to manufacturer specifications to avoid rotor warping
• Check compatibility with vehicle ABS system; this rotor does not include an ABS tone ring
• Inspect brake pads and replace if worn to maintain optimal braking performance

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards, ensuring reliable performance and fitment. While specific warranty details for part number 121.51021 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult the product packaging or Centric’s official resources for exact warranty terms.