Roborock S9 MaxV Ultra maintenance set

The Roborock S9 MaxV Ultra is the western-market flagship of the high-suction S9 generation, running 18,000 Pa with the DuoRoller Riser twin-roller brush – two counter-rotating rubber rollers divided in the centre – and the VibraRise 4.0 sonic mop scrubbing at 4,000 strokes a minute and lifting clear of carpet. Its RockDock Ultra washes the mop at 60°C, dries it with warm air and empties the bin automatically. That hardware sets the service rhythm: at 18,000 Pa the HEPA filter loads quickly and six weeks is the realistic maximum interval before it greys; the twin rollers last five to seven months but need the central divider channel cleared at every service so split hair cannot compact inside and bind them; the sonic mop pad loads fibre faster than a static drag pad and is best inspected around eight weeks; the side brush splays against furniture legs over three to six months; and the sealed dock bag fills every three to five weeks.

This maintenance set keeps all of those intervals stocked with Plus.Parts® components built as a direct-fit alternative to the original Roborock part 8.02.0403: two anti-tangle main-brush sets, four side brushes, six filters, four dock dust bags, four mop cloths and four side pads – twenty-four parts, each sized to the S9 MaxV Ultra’s own mounts so fitting them is identical to swapping the originals. The filters earn their place first – at 18,000 Pa the HEPA element is the main fine-filtration stage in the airpath, so a denser media holds suction steady across the six-week interval, while a loose generic filter lets fine dust settle back onto the floor and makes the motor draw extra current.

The mop pads keep their scrubbing texture under the VibraRise 4.0 module’s 4,000-stroke action and the dock’s 60°C wash rather than matting flat early, and the DuoRoller Riser compound stays supple so both rollers hold even traction instead of hardening. Behind the set is a real team at VacuumReviews.eu: the S9 MaxV Ultra shares this maintenance set with its G30 and S90VER counterparts across markets, so if you are unsure which name is printed on your machine, or anything else comes up, reach out and we will sort it quickly.

At a glance

• Direct-Fit Compatibility – Every part matches the S9 MaxV Ultra’s brush mounts, mop plate, filter bay and RockDock Ultra, so fitting is tool-free and exactly like the original 8.02.0403 set.
• Built to Last – Denser filter media, hard-wearing mop pads and a supple DuoRoller Riser compound that hold their performance across the full replacement cycle.
• Recommended by Our Team – This is the value pack our review team recommends to S9 MaxV Ultra owners, based on hands-on experience with the high-suction S9 platform.