R1 Concepts 2551-1679-00 Disc Brake Pad Set - Rear

Rear Brake Pads for Select Mitsubishi and Mazda Models

R1 Concepts R1 Optimum OE Pads, part number 2551-1679-00, are rear disc brake pads for select Mitsubishi and Mazda vehicles. This pad set is built for direct rear brake service on applications such as the Mitsubishi Outlander Sport, Mitsubishi Outlander, Mazda 3, Mazda 3 Sport, Mazda 6, Mitsubishi RVR, and Mitsubishi ASX.

Key Features

• Rear disc brake pad set for select 2013-2025 Mitsubishi and Mazda applications
• R1 Optimum OE Pads line for OE-style brake service
• Fits rear positions only
• Application-specific coverage for models with mechanical or manual parking brake notes where listed
• Part number 2551-1679-00 for accurate ordering and fitment lookup

Fitment Details

• Fits 2013-2025 Mitsubishi Outlander Sport, rear.
• Fits 2017-2019 Mitsubishi Outlander, rear, mechanical parking brake.
• Fits 2017-2018 Mazda 3, rear, manual parking brake.
• Fits 2017-2018 Mazda 3 Sport, rear, manual parking brake.
• Fits 2014-2016 Mazda 3, rear, Mexico built.
• Fits 2014-2016 Mazda 3 Sport, rear, Mexico built.
• Fits 2014-2016 Mitsubishi Outlander, rear.
• Fits 2013-2016 Mitsubishi RVR, rear.
• Fits 2014-2015 Mazda 6, rear.
• Fits 2013-2015 Mitsubishi ASX, rear.

Product Description

R1 Concepts 2551-1679-00 is a rear disc brake pad set in the R1 Optimum OE Pads line, made for drivers servicing rear brake systems on select Mitsubishi and Mazda vehicles. The fitment list covers Mitsubishi Outlander Sport, Outlander, RVR, and ASX models, plus Mazda 3, Mazda 3 Sport, and Mazda 6 rear brake applications. Use this part number when matching rear pad replacement needs for vehicles with the listed parking brake and build notes.

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

Common Issues This Part Addresses

• Worn rear brake pads causing reduced stopping performance
• Squealing or scraping noise from the rear brakes
• Brake pedal vibration related to pad wear
• Uneven rear pad wear during routine brake service
• Inspection failure due to thin or damaged rear pads

Installation Notes and Tips

Confirm rear axle fitment, parking brake type, and build notes before installation. For Mazda 3 and Mazda 3 Sport applications, verify manual parking brake or Mexico-built configuration where listed. For Mitsubishi Outlander applications, confirm the mechanical parking brake note on the 2017-2019 models. Inspect rotors, caliper hardware, and brake fluid condition during service, and follow the vehicle manufacturer’s brake bedding procedure after installation.

Quality Assurance

R1 Concepts R1 Optimum OE Pads are positioned as OE-style replacement brake pads for application-specific rear brake service. Part number 2551-1679-00 supports accurate fitment matching across the listed Mitsubishi and Mazda rear brake applications.