Roborock S8 Max Ultra
Which parts fit the Roborock S8 Max Ultra?
Manufacturer exact-model evidence confirms Roborock S8 Max Ultra compatibility with Edgewise Mop Cloth (hot-water-wash) (US market), 5-Arm Side Brush (standard) (US market), and Main Mop Cloth (VibraRise 3.0) for S8 MaxV Ultra / S8 Max Ultra (SKU RR-KJTB2-S8MaxVUltra-P02) (US market). Compatibility with FlexiArm Design Side Brush is not confirmed; see its evidence below.
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 Max Ultra and S8 look similar, but Edgewise Mop Cloth (hot-water-wash) is compatible for S8 Max Ultra while it's unknown for S8.
- S8 Max Ultra and S8 look similar, but Sonic Mop Pad (standard) is unknown for S8 Max Ultra while it's compatible for S8.
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FlexiArm Design Side Brush
UnknownFlexiArm functionality does not establish a distinct replacement brush. Previously compatible (manufacturer_confirmed) on the strength of Roborock's support article (https://support.roborock.com/hc/en-us/articles/33954114436761-What-is-the-difference-among-of-S8-Pro-Ultra-S8-Max-Ultra-and-S8-MaxV-Ultra), which only says S8 Max Ultra and S8 MaxV Ultra "are equipped with the FlexiArm Design Side Brush" — a feature difference, not a statement about which replacement brush fits. No official FlexiArm-specific replacement brush product was found, and Roborock's standard side brush (SKU RR-BS5-Q85MaxPlus-M2) names S8 Max Ultra and S8 MaxV Ultra directly. Whether this is a real separate part is under audit.
Edgewise Mop Cloth (hot-water-wash)
CompatibleEvidence (1) — verified 2026-09-24
- Roborock Edgewise Mop Cloth*2pcs for S8 MaxV Ultra, S8 Max Ultra — "Buy Roborock Edgewise Mop Cloth*2pcs for S8 MaxV Ultra, S8 Max Ultra" (official product 7160741429366, SKU RR-TB2-S8MaxVUltra-P02). This is the side (rotating) mop's cloth — the main mop uses RR-KJTB2-S8MaxVUltra-P02.
5-Arm Side Brush (standard)
CompatibleEvidence (1) — verified 2026-09-24
- Roborock Black Side Brushes Replacement (2 Pieces) — "Buy Roborock Side Brush*2 for S8/S8+/S8 Pro Ultra/Qrevo/S7 Max Ultra/Q8 Max/Q8 Max+/Q5 Pro/Q5 Pro+/S8 MaxV Ultra/S8 MaxV Ultra(R&D)/S8 Max Ultra/S8 Max Ultra/s8 Max Ultra(R&D)/Qrevo S/Qrevo Master/Q5 Max+/Q5 DuoRoller+/Qrevo Plus/Qrevo Slim" (official product 6849869021302, SKU RR-BS5-Q85MaxPlus-M2)
Sonic Mop Pad (standard)
UnknownNo source states this standard mop cloth does not fit. Previously not_compatible (manufacturer_confirmed) on Roborock's support article (https://support.roborock.com/hc/en-us/articles/33954114436761-What-is-the-difference-among-of-S8-Pro-Ultra-S8-Max-Ultra-and-S8-MaxV-Ultra), which only lists "Edgewise Mop Cloth" among S8 Max/MaxV Ultra features — and the Edgewise cloth is the side (rotating) mop's cloth, not a replacement for the main mop. Roborock sells a dedicated main mop cloth for these models (SKU RR-KJTB2-S8MaxVUltra-P02), and this standard product (RR-TB2-S7MaxV-02) does not list them, which suggests a different main cloth but is not an explicit exclusion.
Dual Rubber Main Brush
UnknownNo manufacturer or multi-retailer source found confirming whether this shares the S8/S8+/Pro Ultra main brush or uses a different one — not assumed either way.
Washable Filter
UnknownNo manufacturer or multi-retailer source found confirming filter compatibility with the base S8 line — not assumed either way.
Evidence (1) — verified 2026-09-24
- Roborock Mop Cloth*2pcs for S8 MaxV Ultra, S8 Max Ultra — "Buy Roborock Mop Cloth*2pcs for S8 MaxV Ultra, S8 Max Ultra" (official product 7160737955958, SKU RR-KJTB2-S8MaxVUltra-P02)