Kersten UBS-Series
One power unit.
Every surface, every season.
The UBS is a professional pedestrian tool carrier for contractors and councils. Weed brushing, path edging, sweeping, grass cutting, artificial turf and winter work all run from one machine, with tool changes in seconds.
Five models, from the 8.4 hp Hydro 9 to the slope-capable Alpin 23 Pro. Hydrostatic drive, mechanical PTO and Quick-Attach 70 on every unit.
Veolia path-edging trial.
Hand-arm vibration, for all-day use.
Swap tools in seconds, no spanners.
Commercial cover on Kersten machines.
Built for professional, all-day work
Why a UBS instead of a traditional two-wheel tractor?
Traditional two-wheel tractors carry low, rear-mounted tools. The UBS has an upright chassis that pushes its tools ahead of the operator, so sweepers, weed brushes, snow ploughs, spreaders and mowers are easier to see and control. Infinitely variable speed lets you slow right down for weed brushing and sweeping.
Mechanical PTO
A direct mechanical drive to the tool, so sweepers, brushes and mowers get the engine’s full power without hydraulic losses.
Quick-Attach 70
The 70 mm connection takes a weed brush off and a sweeper on in seconds, without tools.
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Power steering
Hydraulic wheel motors and optional zero-turn or active steering make heavy front tools easy to guide.
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Low vibration
Vibration-dampened, height- and side-adjustable handlebars keep hand-arm vibration below 2.5 m/s², helping operators work longer within limits.
UBS or K-Series?
Two Kersten pedestrian ranges, built for different work.
The K-Series is a compact, lighter machine for general sweeping and light moss and weed removal. The UBS is the step up for heavy, all-day work: its wheel motors and mechanical PTO let it do jobs a K-Series isn’t built for.
| UBS-Series | K-Series | |
|---|---|---|
| Wheel drive | Hydrostatic, heavy-duty hydraulic wheel motors, power steering | Hydraulic forward / reverse drive, free differential for kerbs |
| Attachment drive | Mechanical PTO | Hydraulic |
| Power | 8.4 – 23 hp | Compact Honda engines |
| Connection | Quick-Attach 70 | 35 mm quick couplings (70 mm on K2100+) |
| Best for | Path edging, gravel renovation, mowing, heavy weed brushing, slopes, all-day use | General sweeping, light moss and weed removal, compact sites |
Choose the power unit
Five UBS models, matched to your work.
All five have hydrostatic drive with forward and reverse from 0–6 km/h, a mechanical PTO and Quick-Attach 70. Start with your most demanding attachment, then choose the power unit with the engine, steering and slope rating to run it all day.
| Model | Engine | Start | Steering | Best for | Max slope | Price ex VAT |
|---|---|---|---|---|---|---|
| Hydro 9 | Honda GX270, 8.4 hp | Recoil | Hydraulic wheel motors | Weed brushing, sweeping, light snow | – | £9,795 |
| Hydro II 13 | Honda GX390, 11.7 hp | Recoil | Hydraulic wheel motors | All-round grounds work, gravel, mowing | – | £12,895 |
| Hydro II 16 | B&S Vanguard twin, 16 hp | Electric | Hydraulic wheel motors; zero-turn optional | Heavy daily use, path edging, larger mowers | Up to 30° | £14,895 |
| Alpin 23 | B&S Vanguard twin, 23 hp | Electric | Hydro-Pro zero-turn | Professional mowing, slopes, winter service | Up to 45° | £22,250 |
| Alpin 23 Pro | B&S Vanguard twin, 23 hp, 1,400 rpm PTO | Electric | Electric zero-turn + active handlebar | Steep banks and heavy vegetation | Up to 50° | £27,895 |
Compact · entry model
UBS-Hydro 9
Honda GX270 · 8.4 hp · 169 kg
Choose it for weed brushing, sweeping, spreading and light snow work on paths and smaller sites.
Takes the 60 cm weed brush, 100 cm sweepers, artificial grass broom, leaf blower, 100 cm snow plough and 60 cm snow blower.
£9,795.00 ex VAT
Listed product price
All-rounder
UBS-Hydro II 13
Honda GX390 · 11.7 hp · 73 × 120 × 130 cm
Choose it as a year-round grounds machine that adds gravel renovation, harrowing and mowing to brushing and sweeping.
Adds the 125 cm snow plough, 80 cm snow blower, 90 cm gravel renovator, 140 cm cutter bar, flail mowers and rotary harrow.
£12,895.00 ex VAT
Listed product price
Heavy daily use · most popular with contractors
UBS-Hydro II 16
B&S Vanguard twin · 16 hp · electric start · <82 dB
Choose it for long days of path edging, weed brushing and mowing, as in the Veolia and South East Water examples. Electric start makes frequent stops and restarts easy.
Takes the widest Hydro range, including the 110 cm flail, 100 cm rotary and drum mowers.
£14,895.00 ex VAT
Listed product price
Slopes · professional mowing
UBS Alpin 23
B&S Vanguard twin · 23 hp · 298 kg · up to 45°
Choose it for banks, verges and slopes, and heavier winter service, with zero-turn steering as standard.
Reinforced wheel motors and an oil-cooled hydraulic system for heavier work. Takes the 130 cm sweeper, 90 cm power harrow, 170 cm cutter bar, drum mower and 100 cm flail mower.
£22,250.00 ex VAT
Listed product price
Steepest ground · heavy vegetation
UBS Alpin 23 Pro
B&S Vanguard twin · 23 hp · 1,400 rpm PTO · up to 50°
Choose it for the steepest banks and heaviest vegetation, with a remote-control option for slopes.
Over the Alpin 23, it adds active handlebar steering that follows your hands, Comfort Drive II with separate speed and direction controls, and a sliding axle to balance heavier attachments. It also takes the 90 cm gravel renovator.
£27,895.00 ex VAT
Listed product price
Try before you buy
Hire a UBS
Not sure which model or attachment suits your site? Hire a UBS with the attachments you need and see the results on your own surfaces first.
Hire is a quick way to test weed brushing, path edging or gravel renovation before committing to a fleet.
Prices are for the power unit only, ex VAT. Attachments, wheels and optional extras such as zero-turn steering or hand protection are additional. Live prices update from each product page.
Attachments by job
What do you need the UBS to do?
Each attachment fits the Quick-Attach 70 connection. The label shows which power units it suits.
Weeds, moss & path edging
Fits all five UBS models
WKB 60 weed brush
Removes weeds, moss and soil from kerbs, joints and path edges, and cuts back encroaching turf to restore path width.
£3,895.00 ex VAT
Listed price · checked Oct 2026
Hydro 9, 13, 16 · Alpin 23
HOAF TWB100K weed burner
Hot-air thermal treatment for young weeds on paths, gravel and around obstacles, without chemicals.
See current price
Live price loads from the product page
Hydro 9, 13, 16
De-Moss 100 sweeper
A 100 cm brush designed to lift moss and algae from tarmac, block paving and artificial surfaces.
See current price
Live price loads from the product page
Sweeping, leaves & artificial turf
Hydro 9, 13, 16 · 130 cm version for Alpin
EFKM 100 cm sweeper
Sweeps debris, leaves and grit from paths, yards and running tracks. The Alpin takes the 130 cm EFKM 12537.
£2,595.00 ex VAT
Listed price · checked Oct 2026
Hydro 9, 13, 16
LBV 5100 leaf blower
PTO-driven blower for moving leaves and light debris into windrows for collection.
See current price
Live price loads from the product page
Hydro 9, 13, 16
KRB 250 artificial grass broom
A 250 cm folding broom that redistributes infill and lifts the pile on artificial pitches and play areas.
See current price
Live price loads from the product page
Grass & vegetation
Hydro 16 · Alpin 23 · Alpin 23 Pro
TSM 1100 flail mower
110 cm flail for rough grass, banks and overgrown areas. Smaller 60 and 92 cm TSM flails suit the Hydro 9 and 13.
See current price
Live price loads from the product page
Hydro 13, 16 · 170 cm for Alpin
Double cutter bar, 140 cm
Clean-cutting knife mower for meadows, wildflower areas and long grass, leaving the cut material for hay or collection.
See current price
Live price loads from the product page
Hydro 16 · 82 cm ZRA 800 for Hydro 9, 13
ZRA rotary mowers
Front rotary mowers for regular grass cutting on verges and amenity areas. Drum mowers are also available for the Hydro 16 and Alpin.
See current price
Live price loads from the product page
Gravel, soil & seedbeds
Hydro 13, 16 · Alpin 23 Pro
WE 090 gravel path renovator
Loosens, cleans and levels the top layer of gravel paths and driveways, uprooting weeds without replacing the gravel.
£6,795.00 ex VAT
Listed price · checked Oct 2026
Hydro 13 · 90 cm for Alpin
Rotary power harrow
Prepares seedbeds and renovates worn ground. Pair it with the self-propelled seeder for one-pass reseeding.
£4,595.00 ex VAT
Listed price · checked Oct 2026
Hydro 9, 13, 16
SLDST 70 rotary spreader
70-litre spreader for grit and salt in winter, and seed, sand or fertiliser the rest of the year.
£3,295.00 ex VAT
Listed price · checked Oct 2026
Winter
Hydro 13, 16 · 100 cm for Hydro 9
SCHN 125 snow plough
125 cm cushioned blade for clearing paths, precincts and car parks quickly.
See current price
Live price loads from the product page
Hydro 13, 16 · Alpin · 60 cm for Hydro 9
Snow blower, 80 cm
Throws snow clear of the path where there is no room to push it aside.
See current price
Live price loads from the product page
27 attachments in total
See the full UBS range
These are the most popular attachments. The full list includes drum mowers, extra flail widths, a seeder and more, each marked with the UBS models it fits.
Attachment prices are ex VAT and update live from each product page.
Real sites, real results
See the UBS at work.
From council pavements to reservoir dam walls, these examples show what the UBS and its weed brush can do on real sites.
Veolia · West Berkshire
Path edging that pays for itself
Veolia trialled a UBS 16 with weed brush against hand edging on footpath verges. It did the job in about half the time and paid for itself after just 81 miles.
Read the case study →
South East Water · Arlington Reservoir
Keeping a 3 km trail safe
Why the UBS Hydro II 16 and weed brush suit the reservoir’s walking trail and one-kilometre dam wall, keeping paths clear of weeds and soil.
Read the article →
Overgrown footpaths
Restoring the full path width
A UBS Hydro with 60 cm weed brush cuts back turf that has crept over a path, ready to sweep away, giving back the original width and a firm surface.
Read the article →
Gravel driveway
Renovate gravel instead of replacing it
A UBS-mounted renovator loosens weeds and compacted gravel and levels the surface, saving customers the cost of a new driveway.
Read the article →
The UBS Hydro 16 II explained
A walk-round of the controls, Quick-Attach 70 and the features that make the Hydro 16 the contractors’ choice.
Watch on YouTube ↗
Removing soil from an overgrown pathway
See the UBS and weed brush restoring a path that turf and soil had narrowed.
Watch on YouTube ↗
UBS Hydro 16 in action
See the Hydro 16 working on site, with the attachment driven by its mechanical PTO.
Watch on YouTube ↗
Alpin 23 Pro on slopes
See the Alpin 23 Pro with a flail mower tackling heavy vegetation on steep ground.
Watch on YouTube ↗Questions before you choose
Which UBS model do I need?
For weed brushing, sweeping and light winter work, the Hydro 9 or 13 is usually enough. For long days of path edging and mowing, most contractors choose the Hydro II 16. For slopes, banks and heavy vegetation, choose the Alpin 23 or Alpin 23 Pro. Tell us the jobs and surfaces and we’ll recommend the right one.
Should I choose a UBS or a K-Series?
Choose the K-Series for general sweeping and light moss and weed removal on compact sites. Choose the UBS for heavier, all-day work: its wheel motors drive it steadily through path edging and gravel renovation with much less operator fatigue, and its mechanical PTO and extra power run hungrier attachments such as flail mowers, gravel renovators and snow blowers.
Does “Hydro” mean the attachments are hydraulic?
No. “Hydro” refers to the hydrostatic wheel drive. UBS attachments are driven mechanically by the PTO, so make sure you order the PTO-driven (M-U 70) version of an attachment.
Will my K-Series or older attachments fit a UBS?
Not necessarily. K-Series attachments are hydraulically driven and the UBS uses a mechanical PTO, so a shared 70 mm connection doesn’t mean a tool will fit. Older UBS attachments may also differ from current carriers. Send us the attachment and carrier details and we’ll tell you what fits.
How does it compare with weeding by hand?
In Veolia’s trial, a UBS 16 with weed brush cleared footpath verges in about half the time of hand edging and paid for itself after just 81 miles of path.
What about hand-arm vibration?
The UBS keeps hand-arm vibration below 2.5 m/s², the HAVS exposure action value, with vibration-dampened handlebars, so operators can work longer within limits. See our article on choosing low-vibration machines.
How quickly can I change attachments?
In seconds. Every attachment uses the Quick-Attach 70 connection, so one operator can switch from weed brush to sweeper to mower without tools.
Can I hire a UBS before buying?
Yes. Hire a UBS with the attachments you need to try it on your own surfaces. Prices are on our hire pricelist.
What warranty does the UBS carry?
Kersten UBS power units and attachments come with a commercial two-year warranty.
Talk to the people who know the UBS
What is your most demanding task?
Tell us the hardest job you need the UBS to do, plus your surfaces, vegetation, gradients, access widths and existing tools. We’ll recommend the power unit and attachments, and arrange a demonstration or hire if you’d like to try it first.
- The jobs you need to do through the year
- Surfaces: tarmac, block paving, gravel, turf, artificial grass
- Slopes, access widths and hours of use
- Whether you’d like to buy, hire or see a demo