R1 Concepts 2551-2303-00 Disc Brake Pad Set - Rear

Rear Brake Pads for Select GM SUVs and Cadillac Sedans

R1 Concepts R1 Optimum OE Pads, part number 2551-2303-00, are rear disc brake pads for select Cadillac, Chevrolet, Buick, and GMC applications. This rear brake pad set is listed for vehicles including the Cadillac CT4, Cadillac CT5, Cadillac XT5, Chevrolet Blazer, Cadillac XT6, Buick Enclave, Chevrolet Traverse, Chevrolet Traverse Limited, GMC Acadia, and Cadillac CT6.

Key Features

• Rear disc brake pad set for select GM and Cadillac vehicles
• R1 Optimum OE Pads line for OE-style replacement fitment
• Application-specific coverage for rear brake service
• Part number 2551-2303-00 for accurate ordering and lookup
• Fits multiple 2019-2026 rear brake applications across Cadillac, Chevrolet, Buick, and GMC

Fitment Details

• Fits 2020-2026 Cadillac CT4, rear. Requires sensor BPS-46008 (1).
• Fits 2020-2026 Cadillac CT5, rear. Requires sensor BPS-46008 (1).
• Fits 2021-2026 Cadillac XT5, rear.
• Fits 2021-2026 Chevrolet Blazer, rear.
• Fits 2021-2025 Cadillac XT6, rear.
• Fits 2020-2024 Buick Enclave, rear.
• Fits 2024 Chevrolet Traverse Limited, rear.
• Fits 2020-2023 Chevrolet Traverse, rear.
• Fits 2021-2023 GMC Acadia, rear.
• Fits 2019-2020 Cadillac CT6, rear. Requires sensor BPS-46005 (1).

What This Part Helps Address

• Rear brake pad wear during routine brake service
• Squealing or noise from worn rear pads
• Reduced braking performance from thin friction material
• Uneven rear brake response caused by aged pads
• Service replacement needs on Cadillac CT4, Cadillac CT5, and Chevrolet Traverse rear brakes

Installation Notes

Confirm rear axle fitment before ordering and match the vehicle year, make, and model exactly to the listing. For Cadillac CT4, Cadillac CT5, and Cadillac CT6 applications, sensor requirements are noted in the fitment data and should be verified during brake service. Inspect rotors, caliper condition, and wear sensors before installation.

Quality Assurance

R1 Concepts R1 Optimum OE Pads are cataloged as an OE-style rear brake pad solution for the listed applications. Part number 2551-2303-00 is provided for precise fitment verification and cross-reference during brake replacement.