The iRobot Roomba 877 belongs to the mid tier of iRobot’s 800 generation, a step up from entry-level via a lithium-ion battery delivering longer, more consistent run times. The cleaning mechanism is the AeroForce dual rubber extractor system, shared across the full 800 series: two counter-rotating rubber cylinders that pull debris through a sealed channel from below. The extended battery means more ground covered per session, and consumables accumulate more hours of wear between replacement stops.
Three components drive the AeroForce system’s performance, each with a distinct wear pattern worth managing. Rubber extractors have the highest contact hours, the compound slowly firms up from floor contact until the robot begins to push surface debris rather than drawing it in. Side brushes sweep the debris the main extractors cannot reach into the cleaning path; their filaments shorten from edge contact, and once shortened, the floor strip along walls goes largely uncollected. Filters accumulate fine particulate the motor pushes through the system; a filter at end-of-cycle restricts airflow noticeably and suction drops across the whole session. This service kit contains Plus.Parts® components to reset all three together: rubber main brushes, 3 side brushes, and 3 filters, 8 parts built to the Roomba 877’s specifications.
Rubber compound in this kit maintains surface elasticity through the full replacement cycle rather than hardening within the first season. Filter media is matched to the 800-series airflow path. A real team handles compatibility questions about the 877 or anything about your order, directly and without delay.
What’s included
- Consistent Performance – Each of the 8 parts is selected to deliver the same cleaning result across the full replacement interval, not just for the first few weeks after installation.
- Built to Last – Rubber compound engineered for sustained elasticity under daily use, paired with filter media that holds its airflow performance from start to finish of the service cycle.
- Responsive Support – Questions about compatibility for the Roomba 877 or anything about your order are answered by a real person, reach out and we will sort it out directly.




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