Bosch 53011521 Disc Brake Rotor - Rear

Bosch QuietCast Rear Brake Rotor

The Bosch QuietCast Disc Brake Rotor, part number 53011521, is a rear conventional rotor built for smooth, consistent braking performance. It uses an iron alloy construction with a smooth brake surface, Geomet disc finish, and coated hat finish for added corrosion resistance.

Compatible with rear brake service on select Hyundai and Kia models, this rotor is a direct-fit replacement for applications such as the Hyundai Elantra, Kia Forte, and Kia Niro. Bosch QuietCast rotor engineering focuses on stable braking feel and a clean surface finish for everyday driving.

Key Features

• Iron alloy construction for durable brake service
• Smooth brake surface with directional brake surface design
• Geomet disc finish and coated hat finish
• Rust resistant coating for added protection
• Conventional solid rotor design without hub assembly
• 5-bolt mounting pattern with 114.3 mm bolt circle diameter
• Center bore diameter: 76 mm
• Outside diameter: 262 mm
• Nominal thickness: 10 mm; discard thickness: 8.4 mm

Product Details

Bosch QuietCast Disc Brake Rotor 53011521 is a rear disc brake rotor designed for vehicles that use a conventional, solid rotor without a hub assembly. The smooth surface and corrosion-resistant finishes support consistent contact at the brake pad interface, while the iron alloy rotor body provides the structural strength expected in routine brake replacement. This part cross-references Hyundai/Kia OE application 58411G2300 for the same application.

Fits 2017-2025 Hyundai Elantra, rear. Fits 2017-2022 Hyundai Ioniq, rear. Fits 2019-2021 Hyundai Veloster, rear. Fits 2020-2024 Kia Forte, rear. Fits 2020-2021 Kia Forte5, rear. Fits 2017-2024 Kia Niro, rear. Fits 2023-2024 Kia Soul, rear.

Common Reasons to Replace

• Rear brake pulsation or uneven braking feel
• Visible rotor wear approaching discard thickness
• Surface scoring, rust, or corrosion on the braking face
• Brake noise caused by worn or uneven rotor surfaces
• Brake service on a Hyundai Elantra, Kia Forte, Kia Niro, or Kia Soul rear axle

Installation Notes

Verify rotor diameter, thickness, bolt pattern, and center bore before installation. This rotor is for rear position use and does not include bearings or a rotor-hub assembly. Clean the hub mounting surface before installing the new rotor, and confirm pad condition and caliper operation during brake service.

Quality Assurance

Bosch QuietCast brake components are built around OE-style fitment and controlled surface finishing for consistent replacement service. The Geomet and coated finishes help protect the rotor from rust during normal use, supporting long-term brake maintenance on the listed Hyundai and Kia applications.