Centric 121.51057 Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Hyundai Kona and Kia Seltos

The Centric C-TEK Standard Disc Brake Rotor 121.51057 is engineered to provide consistent braking performance for Hyundai Kona and Kia Seltos models. Designed as a solid rotor with a smooth surface, it ensures dependable stopping power and durability under normal driving conditions.

• Compatible with Hyundai Kona and Kia Seltos vehicles
• Part number 121.51057 for precise identification
• Solid disc brake rotor with smooth surface finish
• Nominal thickness of 0.394 inches (10.000 mm) and discard thickness of 0.315 inches (8.000 mm)
• Overall height of 1.276 inches (32.400 mm) and outside diameter of 11.181 inches (284.000 mm)
• Floating disc mounting design with 5 lug holes (0.492 inches / 12.500 mm diameter)
• Center hole diameter of 2.717 inches (69.000 mm) and mounting bolt hole circle diameter of 4.500 inches (114.300 mm)
• Weight approximately 10.1 lbs (4.58 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 solid rotors with smooth surfaces that deliver consistent braking performance for everyday driving. The 121.51057 rotor is part of this line, ensuring compatibility and quality for Hyundai Kona and Kia Seltos vehicles requiring a dependable disc brake rotor.

Product Details and Specifications

This Centric disc brake rotor features a solid design with a smooth surface type, which helps maintain consistent brake pad contact and reduces noise. The rotor’s nominal thickness is 0.394 inches (10.000 mm), with a discard thickness of 0.315 inches (8.000 mm), indicating when replacement is necessary to maintain safe braking. The overall height measures 1.276 inches (32.400 mm), and the outside diameter is 11.181 inches (284.000 mm), matching OEM dimensions for proper fitment.

The rotor includes a floating disc mounting style and has 5 stud/lug holes with a diameter of 0.492 inches (12.500 mm). The center hole diameter is 2.717 inches (69.000 mm), and the mounting bolt hole circle diameter is 4.500 inches (114.300 mm). This rotor does not include an ABS tone ring or bearings.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors on Hyundai Kona and Kia Seltos
• Resolves brake pulsation and vibration caused by uneven rotor surfaces
• Addresses reduced braking efficiency due to rotor thickness below discard limits
• Eliminates noise issues related to rotor surface imperfections
• Restores proper rotor dimensions for safe and reliable 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
• Use proper torque specifications for lug nuts to avoid rotor warping
• Check compatibility with vehicle ABS system as this rotor does not include an ABS tone ring
• Inspect brake pads and replace if worn to ensure optimal braking performance

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet 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.