R1 Concepts 2551-0637-00 Disc Brake Pad Set - Front

R1 Concepts OE-Style Front Brake Pads

R1 Concepts R1 Optimum OE Pads, part number 2551-0637-00, are front disc brake pads for select Mazda applications. This pad set is listed for Mazda Protege, Mazda Protege5, and Mazda 626 front brake service, with fitment covering 1998-2003 model years.

Key Features

• Front disc brake pad set for OE-style replacement service
• R1 Optimum OE Pads product line from R1 Concepts
• Fits 2003 Mazda Protege, front, rear drum
• Fits 2002-2003 Mazda Protege5, front
• Fits 1998-2002 Mazda 626, front, rear drum
• Fits 2002 Mazda Protege, front
• Fits 2001 Mazda Protege, front, rear disc
• Part number 2551-0637-00 for catalog matching and ordering

Product Details

The R1 Optimum OE Pads line is built for direct replacement use on factory-style front brake systems. This set is cataloged for Mazda Protege, Mazda Protege5, and Mazda 626 front applications, including vehicles with rear drum or rear disc configurations as noted in the fitment data. If you are searching for front brake pads for a 2001 Mazda Protege, 2002 Mazda Protege5, or 1998-2002 Mazda 626, this part number 2551-0637-00 matches the listed applications.

Common Issues Addressed

• Worn front brake pad friction material
• Squealing or noisy braking from pad wear
• Reduced stopping performance from thin pads
• Brake pedal feel changes caused by pad deterioration
• Uneven front brake service intervals on Mazda Protege and Mazda 626 models

Installation Notes

Verify the vehicle year, model, and rear brake configuration before ordering. This front pad set is listed for specific Mazda Protege, Protege5, and 626 applications only, so confirm the fitment notes against your brake system. Part number 2551-0637-00 should be matched to the vehicle’s front axle application during service.

Quality Assurance

R1 Concepts supplies the R1 Optimum OE Pads line as an OE-style brake replacement option. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.