We offer a free delivery service for all machines within a 30 mile radius. Not only that; we build, inspect and run up every machine prior to delivery. Making sure you get a fully functional machine that is set-up and ready for use. On delivery we will run through with you any instructions & maintenance advice so you are comfortable with your new machine.
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Allett Stirling 51 20″ Battery Cylinder Mower
Price range: £3,999.00 through £4,379.64 inc. VAT
The Allett Stirling 51 offers lawn enthusiasts the ultimate in battery-powered precision. With its 20″ cutting width and revolutionary Ultra-Change™ cartridge system, it delivers professional-level results and complete lawn care for medium to large domestic lawns.
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Description
Why buy the Allett Stirling 51 20″ Battery Cylinder Mower (Tool Only)?
- Cutting Width: 20″ (51cm), perfect for lawns up to 900mĀ²
- Power System: Utilises the versatile and powerful EGO 56V battery platform
- Ultra-Change™ System: Swap cartridges in approximately 15 seconds without any tools
- Precision Cutting: HiteRite™ micro-adjustment offers a cutting range of 5mm to 50mm
- ProDrive™ Technology: Dual brushless motors for independent control of the cylinder and rear roller
- Perfect Stripes: Features a split rear roller with differential for easy turning and reduced turf scuffing
Professional Lawn Care for the Home Enthusiast
Designed for gardeners with medium to large lawns, the Allett Stirling 51 is an expert-grade battery cylinder mower that delivers one of the most exact and robust mowing experiences available. It combines Allettās renowned cutting performance with the convenience of the EGO 56V battery system. This mower is ideal for users seeking a professional-level finish, precise cultivation, and comprehensive lawn maintenance, including thatch control, seasonal renovations, and weed management.
Advanced ProDrive™ and EGO Battery Power
At the heart of the Stirling 51 is the ProDrive™ system, featuring two powerful brushless electric motors. One motor drives the cutting or cultivation cartridge, while the other powers the rear roller. This independent control allows for variable forward speeds, adjusted on-the-move via the RotoShift™ handlebar control, ensuring the perfect pace for any task. The mower is powered by the EGO 56V battery system, known for its ‘Keep Cool’™ Technology, which is fully interchangeable with other EGO garden tools. Please note this model is sold as ‘Tool Only’, with batteries and chargers available separately or as part of a kit.
| Battery Model | Typical Run Time | Charge Time (Standard) | Charge Time (Rapid) |
|---|---|---|---|
| EGO 5.0Ah | Approx. 40 mins (850mĀ²) | 100 mins | 40 mins |
| Larger 7.5Ah and 10Ah batteries are also compatible for extended run times. | |||
Unmatched Precision and Control
Achieving the perfect lawn height is effortless with Allettās HiteRite™ height of cut selection, offering micro-adjustments with a clear scale from 5mm to 50mm. A separate scale is provided for setting depths when using cultivation cartridges. The mower’s SureBlade™ system features a thicker, more rigid bottom blade, making blade setting easier and more accurate. This, combined with the quiet electric motors, makes the Stirling Allettās quietest mower ever. Standard features include an adjustable spring-tine lawn rake, a front wheel kit, and a split rear roller with differential drive to assist with creating perfect straight lines and preventing turf scuffing on turns.
The Revolutionary Ultra-Change™ Cartridge System
The Stirling 51 excels in versatility thanks to its patented Ultra-Change™ system. This innovative design allows the user to swap the standard 6-blade mowing cartridge for a range of cultivation tools in just 15 seconds, with no tools required. This transforms the Stirling from a mower into a complete lawn care station. It accepts all 20″ Allett cartridges, including the scarifier, aerator, dethatcher, lawn brush, and verticut cartridge. For an even finer cut, an optional 10-bladed cylinder is available, perfect for ornamental lawns or bowling greens. An optional grooved front roller can also be fitted.
Ergonomic Design and Operator Comfort
The Allett Stirling 51 is a perfectly balanced machine with comfortable, ergonomic handlebars that are adjustable to three heights or can be folded for storage. A single hand lever allows for instant height adjustment to suit any user. The 70-litre front-mounted grassbag is lightweight, easy to attach, and its tapered design ensures it empties cleanly. Furthermore, the GlideDrive™ system allows the mower to be pulled backwards with ease, without any resistance from the drive motor.
As an established, authorised UK dealer for Allett, Sims Garden Machinery offers more than just a product in a box. With over 100 years of experience, our knowledgeable sales staff at our Stratford-upon-Avon showroom can provide expert advice to ensure you choose the right machine. For local customers, our service includes a free Pre-Delivery Inspection (PDI) by our trained mechanics, ensuring your mower is built, tested, and ready to use. We also provide local delivery and a comprehensive handover demonstration to show you how to operate and maintain your new Allett mower safely and effectively.
Not sure which machine or part is right for you?
Our team is here to help. Contact us today for expert advice.
Our team is here to help. Contact us today for expert advice.
Technical Specification
| Cutting Width | 51cm (20″) |
| Recommended Lawn Size | Up to 900mĀ² |
| Cutting Blade | 6-blade cylinder supplied as standard |
| Height of Cut (6-blade) | 5mm ā 50mm |
| Height of Cut (10-blade) | 3mm ā 20mm (optional cartridge) |
| Adjustment Method | Quick step-less adjustment with HiteRite™ gauge |
| Cartridge System | Ultra-Change™ (approx. 15-second, tool-free change) |
| Cartridge Compatibility | Accepts ALL 20″ Allett cartridges |
| Power Source | EGO 56V Battery System (sold separately) |
| Motor Technology | Dual Brushless Motors (ProDrive™) |
| Cylinder Motor Power | 1000W |
| Drive Method | Variable Speed (1.2ā3.7 mph), self-propelled |
| Front Roller | Steel/zinc with scraper bar (smooth as standard) |
| Rear Roller | Double section with geared differential |
| Grassbag Capacity | 70 Litres |
| Handlebars | 3 height positions + folding for storage |
| Weight (Mower Only) | 43kg |
| Weight (with Cartridge, Battery & Grassbag) | 57kg |
| Sound Pressure at Operator | 71 dB |
| Vibration Emission | 1.7 m/sĀ² |
| Warranty (Homeowner) | 2 years (parts & labour) |
Why buy from Sims Garden Machinery?
Authorised main dealer
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
Real people, real support
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Expert advice ā not pushy sales
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how youāll actually use the machine.
Established, independent family business
Weāre a long-standing independent dealer with deep roots in the local area ā built on reputation, repeat customers, and word of mouth.
Frequently Asked Questions
What size lawn is the Allett Stirling 51 suitable for?
The Stirling 51, with its 20-inch (51cm) cutting width, is ideal for medium to large domestic lawns, with a recommended maximum area of up to 900mĀ².
What battery system does the Stirling 51 use and how long does it last?
This mower runs on the advanced EGO 56V battery system. When using a 5.0Ah battery, you can expect approximately 40 minutes of continuous mowing time. Larger capacity batteries, such as 7.5Ah or 10Ah, are also compatible for extended runtime.
How easy is it to change the cartridges?
It’s incredibly easy. Thanks to Allett’s patented Ultra-Change™ system, you can swap between the mowing cylinder and other cultivation cartridges in around 15 seconds, completely without the need for tools.
Which cartridges are compatible with the Stirling 51?
The Stirling 51 is compatible with all 20-inch Allett Ultra-Change™ cartridges. This includes the scarifier, verticut, aerator, dethatcher, lawn brush, and the optional 10-blade fine-finish cutting cylinder.
Is the Allett Stirling 51 a quiet mower?
Yes, it is Allettās quietest mower ever. The combination of the battery power and advanced brushless motors results in very low noise output (71 dB at the operator’s ear), making it a much more pleasant experience for you and your neighbours.
User Manuals / Downloads
Additional information
| Brand | Allett |
|---|---|
| Collector SizeThe capacity of the grass collection bag or box in litres. | 70 |
| Cutting MethodThe cutting mechanism used (e.g., Rotary or Cylinder). | Cylinder |
| Cutting WidthThe width of the grass cut in a single pass. | 51 cm |
| Drive TypeHow the mower is propelled (e.g., Push, Self-Propelled, Variable Speed). | Variable Speed |
| Mowing FunctionsAvailable mowing modes (e.g., Collection, Mulching, Side-Discharge). | [“Collection”] |
| Power Output (kW)The tool\'s power output measured in kilowatts (kW). | 1 |
| Rear RollerIndicates if the mower features a rear roller for creating lawn stripes. | TRUE |
| Package | Tool Only, Mower & 5Ah Battery & Rapid Charger, Mower & 10Ah Battery & Rapid Charger |
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About Allett
At Sims Garden Machinery, we sell a range of Allett Mowers, famed for their high quality. We stock both petrol and battery-powered walk-behind mowers. Built around a cylinder design, these machines offer an unrivalled cutting performance, for use in domestic and commercial environments. We also stock a range of additional cartridges that can be attached to Allett Mowers, for use as verticutters or scarifiers.
Our garden machinery can be delivered across the UK, with a skilled member of our team assembling it and demonstrating correct usage to you upon arrival. This ensures the longevity of all equipment purchased from Sims Garden Machinery.
If you have any queries about our range of Allett Mowers, talk to a member of our expert customer service team today. Sims Garden Machinery is a family run business based in the UK, with over 100 years of experience selling gardening equipment. Our team possesses a deep understanding of our garden range.
Shipping & Delivery
FREE PDI, DELIVERY & HANDOVER
NATIONAL DELIVERY
- Each machine will be tested prior to delivery.
- Orders will be sent out via either ThePalletNetwork or DHL insured service.
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