R1 Concepts 2552-2398-00 Disc Brake Pad Set - Front

R1 Concepts Front Brake Pads for Kia K5 and Hyundai Sonata

R1 Concepts R1 Optimum OE Pads, part number 2552-2398-00, are ceramic front disc brake pads built for specific Kia and Hyundai applications. This set is sized for direct front axle replacement on the 2021-2026 Kia K5 and the 2021-2025 Hyundai Sonata N-Line.

Key Features

• Ceramic friction material for consistent everyday braking performance
• Integrally molded friction material attachment for a secure pad construction
• 4-pad set for the front axle
• Outer pad dimensions: 145.6 mm wide, 64.4 mm high, 16.8 mm thick
• Inner pad dimensions: 145.5 mm wide, 64.5 mm high, 16.8 mm thick
• OE-style fitment for front brake service on select Kia K5 and Hyundai Sonata models

Product Details

The R1 Optimum OE Pads line focuses on OE-style replacement brake pads with a ceramic friction compound and molded attachment construction. Part number 2552-2398-00 is engineered for front brake service on the Kia K5 and Hyundai Sonata N-Line, with pad dimensions matched to the listed applications for accurate fitment and consistent contact at the rotor surface. This part number 2552-2398-00 is a direct-fit front disc brake pad set for 2021-2026 Kia K5 and 2021-2025 Hyundai Sonata N-Line models.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Worn front brake pads that reduce stopping performance
• Brake noise caused by pad wear or degraded friction material
• Uneven pad contact from incorrect pad dimensions
• Brake pedal feel changes related to front pad wear
• Routine front brake service on Kia K5 and Hyundai Sonata N-Line models

Installation Notes and Tips

Verify rotor condition, caliper operation, and pad fitment before installation. Clean the caliper bracket and pad contact points, then confirm the inner and outer pads are positioned correctly for the front axle. For best results, follow the vehicle manufacturer’s brake service procedure and bed in the pads according to standard brake break-in practice.

Quality Assurance

R1 Concepts manufactures OE-style brake components for direct replacement applications. This ceramic front disc brake pad set is built to match the listed vehicle fitment and dimensional requirements for the specified Kia and Hyundai models.