Roborock S8
Quick answer
Roborock S8 has confirmed compatibility with Dual Rubber Main Brush, Washable Filter, and 5-Arm Side Brush (standard). Compatibility with FlexiArm Design Side Brush is NOT confirmed — Roborock's own support article states only S8 Max Ultra and S8 MaxV Ultra have the FlexiArm Design side brush.
Compatibility varies by part. Being in the same series does not mean every part is shared — check each part below individually.
Common compatibility traps:
- S8 and S8 Max Ultra look similar, but Dual Rubber Main Brush is compatible for S8 while it's unknown for S8 Max Ultra.
- S8 and S8 Max Ultra look similar, but Washable Filter is compatible for S8 while it's unknown for S8 Max Ultra.
Dual Rubber Main BrushCompatible
Evidence (2) — verified 2026-09-14
- Replacement Parts Accessories Kit Compatible with Roborock S8 S8+ S8 Pro Ultra — Groups S8/S8+/S8 Pro Ultra as sharing main brush.
- Accessories Kit Replacement for Roborock S8 Pro Ultra / S8+ / S8 — Independent listing confirming the same grouping for main brush.
Washable FilterCompatible
Evidence (2) — verified 2026-09-14
- Replacement Parts Accessories Kit Compatible with Roborock S8 S8+ S8 Pro Ultra — Groups S8/S8+/S8 Pro Ultra as sharing filter.
- Accessories Kit Replacement for Roborock S8 Pro Ultra / S8+ / S8 — Independent listing confirming the same grouping for filter.
5-Arm Side Brush (standard)Compatible
Evidence (2) — verified 2026-09-14
- Replacement Parts Accessories Kit Compatible with Roborock S8 S8+ S8 Pro Ultra — Groups S8/S8+/S8 Pro Ultra as sharing this standard side brush.
- Accessories Kit Replacement for Roborock S8 Pro Ultra / S8+ / S8 — Independent listing confirming the same grouping.
Sonic Mop Pad (standard)Compatible
Evidence (2) — verified 2026-09-14
- Replacement Parts Accessories Kit Compatible with Roborock S8 S8+ S8 Pro Ultra — Groups S8/S8+/S8 Pro Ultra as sharing mop cloth pads.
- Accessories Kit Replacement for Roborock S8 Pro Ultra / S8+ / S8 — Independent listing confirming the same grouping.
FlexiArm Design Side BrushNot compatible
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."
Edgewise Mop Cloth (hot-water-wash)Not compatible
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 ... Hot Water Mop Washing, Edgewise Mop Cloth."