Allett Stirling 51 (20'') SPORT Model
Designed for the amateur sports arena such as cricket, bowls and croquet with smaller budgets the Stirling Sport offers our most exact and robust mowing to date with the Allett® cartridge system giving professional level cultivation and clean-up for thatch control, autumn renovations and weed control. The Stirling range drives a range of cartridges to cultivate your pitch deeper, faster and with greater precision with unprecedented control and new levels of comfort.
Powered by the EGO 56V battery system using their unique 'Keep Cool'™ Technology, the mowing and cultivation cartridges are driven by a separate powerful electric motor(ProDrive™) and the rear roller drive speed is controlled by the handlebar mounted RotoShift™ speed control which can be adjusted on-the-move so the correct forward speed is selectable to achieve the best results.
The Stirlings are perfectly balanced machines with ergonomical handlebars which are so comfortable, the user will not be disappointed when the job is finished. Faster mowing speeds, if desired, are easily selected with the latest RotoShift™ control, but slowing for obstacles is effortless. The operator can also slow the speed right down when scarifying for example for greater efficiency.
Allett’s new HiteRite™ height of cut selection gives micro adjustment with a clear scale of the height selected. This height system is an even bigger advantage when selecting the depth for cultivation.
Allett’s quickest cartridge change ever means that removing the mower cartridge and securing the other cartridges takes just seconds, and no tools are required with the patent-applied for Ultra-Change system (Int Pat App WO 2023/079275)
A thicker, more rigid bottom blade SureBlade™ system gives easier and more accurate blade setting. Combined with quiet electrical system, this is Allett’s quietest mower ever. Your neighbours will love your mower too.
Features inherited from Allett’s Kensington range are standard like the adjustable, spring-tine lawn rake behind the steel front roller, front wheel kit and a split rear roller with differential drive for assistance in straight-lining and reduced turf-scuffage when turning.
The 10-bladed cylinder is fitted as standard with a thinner front-edged blade for where a close shave is desired for example cricket and bowling greens.
The handlebar controls are designed for extra comfort, and a single hand lever gives instant adjustment for comfortable heights for users of all sizes. The new front-mounted grassbag is light, easy to mount and the tapered design empties with ease even when packed full with clippings into wheeley-bins.
The Stirling can be pulled back with ease without resistance from driving the motor with the GlideDrive™ system. (Patent Number GB2613951)
Dimensions
- Cutting Width: 51cm / 508mm / 20"
- Machine Width: 655mm / 26"
- Machine Body Length: 580mm / 23"
- Length with Grass Collector: 870mm / 34"
- Handle Height Min: 910mm / 36"
- Handle Height Max: 1050mm / 41"
Cutting System
- Height of Cut: 3mm – 50mm (step-less quick adjustment with mm gauge)
- Clip Rate (Variable): 138 – 389 cuts per metre
- Cutting Blade:
◦ 10-Blade cylinder supplied as standard
◦ Stiffer bottom blade for even, light-contact cutting - Cartridge Compatibility: Accepts all 20" Ultra-Change (UC) cartridges
- Cartridge Change Time: ~15 seconds (no tools required)
- Safety: Prevents operation if cartridge not installed
Cultivation Depths
- Verticut: –10mm
- Cylinder:
◦ 10 Blade: 3-50mm
◦ 6 Blade: 5-50mm - Scarifier: –10mm
- Dethatcher: –14mm
- Aerator: –14mm
- Brush: Surface level
Motors & Power
- Cylinder Motor: 1000W high-power brushless motor
- Motor Type: Brushless
◦ High torque-to-weight ration
◦ Reduced noise and maintenance
◦ Longer lifespan - Dual Motor System (Pro Drive):
◦ Independent drive for rear roller and cylinder
◦ Travel across lawns without engaging blades
Battery System
- Battery: 10Ah EGO Lithium-Ion
- Features: LED power gauge and power management system
- Compatibility: 5Ah, 7.5Ah, and 12Ah batteries
- Runtime: Approx. 60 minutes mowing
- Charge Time: Approx. 40 minutes (Rapid Charger)
- Battery Warranty: 2 years (via EGO)
Drive & Handling
- Forward Speed: Variable – 1.2 to 3.7 mph
- Drive: Independent rear roller drive
- Rear Roller: Double section with geared differential
- Extra Feature: Overdrive / drag-back for manual movement
- Front Roller: Zinc-plated steel with scraper bar, locking kit fitted to front roller
- Optional: Grooved roller available
Ergonomics & Control
- Handlebars:
◦ 3 height positions
◦ Foldable for storage
◦ Moulded ergonomic grips with speed control - Operator Positioning:
◦ Telescopic quick-release design
◦ Improved visibility and manoeuvrability
Additional Features
- Grassbox: 70L fabric with wire frame (easy emptying)
- Grass Rake: Adjustable spring-tine rake fitted as standard
- Noise Level: 90 dB(A)
- Weight:
◦ Mower only: 43kg
◦ With cartridge, battery & grassbox: 57kg
Warranty
- Sports Use: 12 months (bowls, cricket, croquet)
- Commercial Use: 3 months
- Effective: Machines sold from 16th May 2024
15 Second cartridge change
The Ultra-Change™ system lets you switch cartridges in under 15 seconds—no tools needed. Fast, easy, and perfect for tackling multiple lawn tasks with zero hassle.
Frontroller locking kit
The front roller locking kit enhances stability and maintains a consistent height of cut, reducing flex during mowing. This results in a cleaner, more even finish—perfect for low-cut sports turf like bowls and cricket where surface precision is essential.
Deeper cultivations than ever before
The Stirling allows deeper cultivations than ever before, reaching depths down to 10mm—ideal for intensive lawn care tasks like thatch removal, aeration, and soil improvement with professional-level precision.
Perfect for low cut pitches
The Stirling 51 Sport is ideal for low-cut turf clubs like bowls and cricket thanks to its 20" width, precision cutting down to 3mm, and powerful dual-motor system. It delivers a clean, even finish and supports interchangeable cartridges for year-round turf care.
Height of cut range
The Stirling offers a wide height-of-cut range from 4mm to 50mm with the standard 6 blade cylinder cartridge, allowing you to fine-tune your lawn’s finish—from a close, clean cut to a longer, healthier trim—using the precise HiteRite™ micro adjustment system. For an even closer finish, the 10 blade cylinder cartridge has a height of cut range from 3mm to 50mm. Ideal for bowls clubs.
7 UC cartridge options
The Stirling is compatible with 7 Ultra-Change (UC) cartridges, giving you all-in-one versatility for mowing, scarifying, aerating, brushing, verticutting, dethatching, and lawn raking—ideal for complete year-round lawn care.
Compatible with:
Allett Stirling Range
Take a closer look at the ALLETT Stirling 51, a premium battery-powered cylinder mower built for precision, power, and professional results. In this video, we demonstrate the Stirling 51 in action—showing off its exceptional cutting performance, smooth handling, and interchangeable cartridge system for a complete lawn care solution. Whether you're a lawn care enthusiast or a groundskeeping professional, see how the Stirling 51 delivers a flawless, striped finish on fine turf.
Watch nowHOW THEY COMPARE
Our comparison table provides a detailed breakdown of the Stirling 43, 51 & 51 SPORT models. Allowing you to easily compare their technical specifications side by side. From cutting widths and motor power to weight and height adjustments, this table helps you find the perfect mower for your needs.
Expert Cordless
Expert Cordless
Expert Cordless
Medium-Large sized lawns up to 700 m2
Medium-Large sized lawns up to 900m2
Cricket wickets and squares, Bowls, Tennis, Croquet and other low cut sports
43cm (17")
51cm (20")
51cm (20") cutting width
Six-blade Carbon Steel Cylinder
Six-blade Carbon Steel Cylinder
Ten-blade Carbon Steel Cylinder as standard
6 Blade 83-234 (standard)
10 Blade 138-389 (optional)
6 Blade 83-234 (standard)
10 Blade 138-389 (optional)
138-389
Up to 40 mins mowing time (5Ah battery)
Up to 40 mins mowing time (5Ah battery)
Up to 60 mins mowing time (10Ah)
1.3 - 5.5 kmph (0.8 - 3.4 mph)
1.3 - 5.5 kmph (0.8 - 3.4 mph)
1.3 - 5.5 kmph (0.8 - 3.4 mph)
All 7 UC cartridges (Verticut, scarifier, groomer, dethatcher, lawn brush, 6/10 blade, aerator)
All 7 UC cartridges (Verticut, scarifier, groomer, dethatcher, lawn brush, 6/10 blade, aerator)
All 7 UC cartridges (Verticut, scarifier, groomer, dethatcher, lawn brush, 6/10 blade, aerator)
1000W @10A Motor
1000W @10A Motor
1000W @10A Motor
56V 5Ah Removable Battery
56V 5Ah Removable Battery
56V 10Ah Removable Battery
Quick step-less adjustment with height gauge in MM
Quick step-less adjustment with height gauge in MM
Quick step-less adjustment with height gauge in MM
6 Blade: 5mm - 50mm (standard)
10 Blade: 3mm - 20mm (optional)
6 Blade: 5mm - 50mm (standard)
10 Blade: 3mm - 20mm (optional)
10 Blade: 3mm - 20mm (standard)
6 Blade: 5mm - 50mm (optional)
Approx 1hr 40 mins charge time
(rapid 40 min charger also available)
Approx 1hr 40 mins charge time (rapid 40 min charger available)
40 minutes to charge the 10Ah (Rapid Charger)
15s cartridge change (no tools)
15s cartridge change (no tools)
15s cartridge change (no tools)
Adjustable handles for height and storage (quick adjust lever)
Adjustable handles for height and storage (quick adjust lever)
Adjustable handles for height and storage (quick adjust lever)
Split steel rear roller with differential
Split steel rear roller with differential
Split steel rear roller with differential
Steel / zinc-plated front roller with scraper bar
Steel / zinc-plated front roller with scraper bar
Steel / zinc-plated front roller with scraper bar, locking kit fitted to front roller
62 litre wire frame fabric grass catcher
70 litre wire frame fabric grass catcher
70 litre wire frame fabric grass catcher
Roto-Shift speed control up to 3.4mph
Roto-Shift speed control up to 3.4mph
Roto-Shift speed control up to 3.4mph
Push Button Start
Push Button Start
Push Button Start
58cm (23")
65cmm (26")
65cm (26")
53kg (117lbs)
57kg (126lbs)
57kg (126lbs)
Operator noise level 86 dB(A)
Operator noise level 90 dB(A)
Operator noise level 90 dB(A)
Rake as standard - adjustable
Rake as standard - adjustable
Rake as standard - adjustable
Two year parts and labour warranty for a home owner
3 months for a Sports User
Two year parts and labour warranty for a home owner
3 months for a Sports User
1 year warranty for sports clubs e.g. bowling green, croquet and cricket wicket arena - 3 months for commercial usage.
Stirling in Action
Explore the power, precision, and performance of the Stirling 51 through our curated video playlist. Watch in-depth demos, detailed unboxings, and insightful comparisons to see how the Stirling 51 stacks up against other mowers. Whether you're a lawn care enthusiast or a first-time buyer, these videos will give you a closer look at what makes the Stirling a standout choice for achieving a professional-quality finish at home.
FAQ's
In our FAQs for the Allett Stirling, you'll find answers to common questions about the mower's features, maintenance, and performance. We’ve gathered insights on everything from how to adjust cutting heights and maintain the mower, to recommendations for the best usage on different types of turf.
What’s the difference between the Stirling Sport and the standard Stirling 51?
The Stirling Sport comes fitted with a 10-blade cylinder (instead of 6) for a finer, lower cut, ideal for cricket and bowls. It also includes extra accessories such as the height bar, grass gauge, and locking arm for ultra-low heights and a more powerful battery for longer mowing time.
Is this mower suitable for our cricket square or bowling green?
Yes! It’s designed specifically for amateur sports turf. It cuts as low as 3mm, is lightweight, quiet, and easy for volunteers to use – ideal for maintaining fine turf like cricket pitches, croquet lawns, or bowling greens.
What battery does it use and how long does it last?
It uses a 10Ah EGO 56V battery with around 60 minutes of mowing time. It comes with a rapid charger for a full charge in approximately 40 minutes. Other battery sizes (5Ah, 7.5Ah, 12Ah) are also compatible.
Can we use different cartridges for scarifying or aerating?
Yes! The Stirling Sport accepts all 20” Allett UC cartridges, including scarifier, aerator, brush, verticut, dethatcher, and more. Cartridge changes take just 15 seconds, tool-free.
How easy is it to use for volunteers or older club members?
Very easy – it features push-button start, variable speed control (RotoShift™), lightweight design, and low vibration. Plus, the ergonomic handlebars make it comfortable for all users.
Does it come with everything we need to get started?
Yes – the price includes the mower, 10-blade cartridge, 10Ah battery, rapid charger, height bar, grass gauge, and locking arm. You can add extra cartridges later as needed.
Is it eligible for cricket club grants?
Yes! The Stirling Sport meets ECB criteria for electric machinery. Check with your County Cricket Board to find out about available grants
Testimonials
James W. Head Groundsman, County Bowls Club
Perfect Finish for Our Green
The Stirling 51 Sport has completely transformed how we maintain our green. The precision of the 10-blade cartridge and the stability from the front roller locking kit give us an immaculate finish every time. It’s built like a professional machine but incredibly intuitive to use
Mike H.,Grounds Manager, Cricket Academy
Precision Cut, Built to Work
We’ve been using the Stirling 51 Sport daily during the season, and it handles low cuts with ease. The independent drive and cartridge system mean we can mow and groom with one machine. It’s reliable, quiet, and delivers professional-level results.
Rob K. Assistant Groundsman, Multi-Sport Facility
Top Choice for Grounds Teams
This is by far the best battery mower we’ve used. The Stirling 51 Sport delivers the precision we need for cricket squares and bowls greens, plus the versatility to switch to grooming or verti-cutting in seconds. It’s a serious bit of kit for serious turf.
READY TO MOW?
Oystein Krogstad: My Experience with the Allett Stirling Electric Cylinder Lawn Mower
Hi there, I’m 38 years old, living and working on the stunning west coast of Norway. My journey into the gardening world is somewhat written in the stars—growing up in a gardening family, I guess i...