R1 Concepts 2551-2135-00 Disc Brake Pad Set - Rear

Rear Brake Pads for Mitsubishi Applications

R1 Concepts R1 Optimum OE Pads part number 2551-2135-00 are rear disc brake pads for select Mitsubishi models. This rear brake pad set is listed for Mitsubishi Eclipse Cross, Mitsubishi Outlander PHEV, and Mitsubishi Outlander applications with the fitment details shown below.

Key Features

• Disc brake pad set for rear axle use
• R1 Optimum OE Pads product line
• Fits 2022-2025 Mitsubishi Eclipse Cross, rear, with Electric Parking Brake
• Fits 2018-2022 Mitsubishi Outlander PHEV, rear
• Fits 2018-2020 Mitsubishi Eclipse Cross, rear
• Fits 2020 Mitsubishi Outlander, rear
• Fits 2017-2019 Mitsubishi Outlander, rear, with Electric Parking Brake
• Part number 2551-2135-00 for application matching

Product Details

The R1 Optimum OE Pads line focuses on OE-style replacement fitment for everyday brake service. Part number 2551-2135-00 is a rear disc brake pad set for Mitsubishi Eclipse Cross, Mitsubishi Outlander PHEV, and Mitsubishi Outlander models listed in the fitment table. Use this part when servicing rear brake wear on vehicles equipped with the noted rear brake configurations, including Electric Parking Brake applications where specified.

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

Common Issues Addressed

• Squealing or noisy rear brakes
• Reduced rear braking performance from worn pads
• Brake dust buildup from deteriorated friction material
• Uneven rear pad wear during routine brake service
• Brake warning symptoms tied to pad wear on listed Mitsubishi models

Installation Notes

Verify rear axle fitment, model year, and any listed notes before installation. Confirm whether the vehicle uses an Electric Parking Brake on the applicable Mitsubishi Eclipse Cross or Outlander fitment. Inspect rotors, calipers, and pad hardware condition during service and follow the vehicle manufacturer’s brake procedure.

Quality Assurance

R1 Concepts R1 Optimum OE Pads are cataloged as an OE-style brake pad line for direct replacement use on the listed Mitsubishi rear applications. Part number 2551-2135-00 should be matched to the exact year, model, and rear brake configuration shown in the fitment data.