Roborock FlexiArm Design Side Brush

Name: FlexiArm Design Side Brush
Brand: Roborock

Quick answer

Roborock FlexiArm Design Side Brush is officially compatible with S8 Max Ultra and S8 MaxV Ultra. Common compatibility trap: Roborock S8+ is NOT included in this compatibility list — Roborock's own support article states only S8 Max Ultra and S8 MaxV Ultra have the FlexiArm Design side brush.

Common compatibility trap:

S8 Max Ultra is compatible, but S8 — a similarly-named model — is not compatible.

Compatible models

Roborock S8 Max UltraCompatible

Evidence (1) — verified 2026-09-14

Roborock Support: difference among S8 Pro Ultra, S8 Max Ultra, S8 MaxV Ultra — "Only S8 MaxV Ultra and S8 Max Ultra are equipped with the FlexiArm Design Side Brush."

Roborock S8 MaxV UltraCompatible

Evidence (1) — verified 2026-09-14

Roborock Support: difference among S8 Pro Ultra, S8 Max Ultra, S8 MaxV Ultra — "Only S8 MaxV Ultra and S8 Max Ultra are equipped with the FlexiArm Design Side Brush."

Known exclusions

Models a manufacturer or retailer source explicitly rules out — useful precisely because it's the mistake people make most often.

Roborock S8+Not compatible

Roborock's own support article states only S8 Max Ultra and S8 MaxV Ultra have the FlexiArm Design side brush.

Roborock S8 Pro UltraNot compatible

Roborock's own support article explicitly excludes S8 Pro Ultra from the FlexiArm Design side brush — only Max Ultra and MaxV Ultra have it.

Roborock S8Not compatible

Roborock's own support article states only S8 Max Ultra and S8 MaxV Ultra have the FlexiArm Design side brush.

Last verified: 2026-09-14