Stiga 7121 HWSY
ride on mower · very large lawns (manufacturer rates up to ~8,500 m²) · fast mowing with a 121 cm triple-blade deck · side-discharge and mulching for long or thick grass
See photos on Anglia Mowers
Price (GBP): £4,999
Specifications
| Category | ride on |
|---|---|
| Power | petrol |
| Cutting width | 121 cm |
| Cutting height | Not specified |
| Weight | Not specified |
| Price | £4,999 |
| Engine | 688 cc |
| Drive | — |
| Grass box | Not specified |
Specs from retailer/review sources — manufacturer verification pending. Data completeness: 63%. Last updated: 2026-07-01.
The spec-sheet read
Our analysis of the sourced spec sheet — positioning and trade-offs, not a hands-on review. We don't score mowers we haven't tested.
The biggest-deck, fastest-mowing option here — a 121 cm triple-blade side-discharge tractor for very large lawns.
The Tornado 7121 HWSY is the high-output machine in the catalogue, rated by Stiga for very large lawns up to roughly 8,500 m². A 121 cm triple-blade deck and a 688 cc Honda GXV V-twin, driven through a pedal hydrostatic transmission, are built for covering ground quickly, with side-discharge and Multiclip mulching for long or thick grass.
The key thing to understand is that it has no grass collector — it is a side-discharge and mulch machine only, so it is the wrong tool if you need bagged collection. For sheer area and speed it is the strongest here; for collection on a large lawn, the Stiga Estate 7102 W is the better match.
Verification note: Marked unverified: Stiga's own UK/international product page was unreachable (HTTP 404) when we captured specs, so figures come from a reputable dealer and LECTURA. The cut-height range and weight were not captured. We will mark it verified once the Stiga page is re-read.
Who it's for
- very large lawns (manufacturer rates up to ~8,500 m²)
- fast mowing with a 121 cm triple-blade deck
- side-discharge and mulching for long or thick grass
Where to buy
We're finalising verified retailer links for this model. In the meantime, ask us and we'll point you to a stockist.
Not sure this is the right mower for your lawn? Tell us the size and conditions and we'll suggest the best fit — free and impartial.
Frequently asked questions
- How much does the Stiga 7121 HWSY cost?
- The Stiga 7121 HWSY costs £4,999 (GBP), based on our sourced retail pricing.
- What lawn size can the Stiga 7121 HWSY handle?
- It's rated for lawns up to 8500 m².
- What is the cutting width of the Stiga 7121 HWSY?
- 121 cm per pass.
Compare with
- Mountfield 1330M — 4000 m²
- Mountfield 1530H — 4000 m²
- John Deere X147R — ride on
Full head-to-head: Stiga 7121 HWSY vs John Deere X147R