R1 Concepts 2551-2373-10 Disc Brake Pad Set - Rear

Rear Ceramic Brake Pads for Hyundai and Kia

R1 Concepts R1 Optimum OE Pads part number 2551-2373-10 are rear disc brake pads built with ceramic friction material and integrally molded attachment. This 4-pad set is sized for a direct rear brake service on select Hyundai and Kia applications, including Hyundai Elantra, Hyundai Kona, Hyundai Kona Electric, Kia K4, Kia Soul, and Hyundai Ioniq.

The R1 Optimum OE Pads line focuses on OE-style replacement fitment and consistent pad construction for everyday braking service. If you are searching for rear ceramic brake pads for a 2021-2025 Hyundai Elantra or a rear brake pad set for a 2023-2025 Kia Soul with an electric parking brake, 2551-2373-10 is the matching part number to review.

Key Features

• Ceramic friction material for rear disc brake applications
• Integrally molded friction material attachment
• 4-pad set for one rear axle service
• Outer pad height: 41.4 mm
• Inner pad height: 41.5 mm
• Outer and inner pad width: 99.5 mm
• Outer and inner pad thickness: 14.9 mm
• R1 Concepts R1 Optimum OE Pads product line

Compatible Vehicle Applications

• Fits 2021-2025 Hyundai Elantra, rear
• Fits 2024-2025 Hyundai Kona, rear
• Fits 2024-2025 Hyundai Kona Electric, rear
• Fits 2025 Kia K4, rear
• Fits 2023-2025 Kia Soul, rear, Electric Parking Brake
• Fits 2021-2022 Hyundai Ioniq, rear

What This Part Helps Address

• Rear brake pad wear during routine maintenance
• Brake noise caused by worn friction material
• Reduced braking response from thin or glazed pads
• Uneven rear pad service on supported Hyundai and Kia models
• Replacement needs for rear disc brake pad sets with OE-style dimensions

Installation Notes

Verify rear axle fitment, pad dimensions, and vehicle configuration before installation. The Kia Soul application is listed with an electric parking brake, so confirm rear caliper and parking brake setup before ordering. For best results, inspect rotors, caliper hardware, and brake fluid condition during pad replacement. Part number 2551-2373-10 should be matched to the exact rear application shown in the fitment data.

Quality Assurance

R1 Concepts R1 Optimum OE Pads are built as an OE-style ceramic replacement pad set for the listed Hyundai and Kia rear applications. Part number 2551-2373-10 is specified with defined pad dimensions and vehicle fitment data to support accurate brake service selection.