Why buy the Cobra AirMow 51B 20″ Petrol Hover Mower?
- Powered by a reliable Briggs & Stratton 575EX 140cc Ready Start engine
- Wide 51cm (20″) cutting width for efficient mowing
- Exceptional performance on steep slopes and banks up to 45°
- Lightweight yet durable ABS injection-moulded deck
- Includes a versatile 3-in-1 wheel kit as standard for transport and stability
- Folding handles allow for convenient and compact storage
The Cobra AirMow 51B petrol hover lawnmower is expertly engineered for the demands of the domestic gardener, particularly those with challenging terrain. It floats on a cushion of air, allowing it to move effortlessly in any direction and making it the ideal solution for cutting on steep slopes and undulating ground where traditional wheeled mowers are unsuitable.
Powerful and Reliable Engine
At the heart of the AirMow 51B is a Briggs & Stratton 575EX Series engine. This 140cc powerplant is renowned for its reliability and performance. The ‘Ready Start’ system ensures straightforward, choke-free starting, allowing the user to get to work with minimal fuss. This engine provides all the power needed to drive the cutting system and maintain the air cushion for a clean, consistent cut.
Master of the Slopes
This mower’s standout feature is its ability to tackle slopes with inclines of up to 45°. The hover action, combined with its lightweight 20kg design and durable ABS injection-moulded deck, allows it to glide over turf without scalping, providing a pristine finish on even the most difficult banks. The generous 51cm (20″) cutting width ensures large areas can be covered quickly and efficiently, and a simple 2-stage cutting height adjustment allows for adaptation to different grass conditions.
Versatility with Standard Wheel Kit
Every Cobra AirMow 51B comes equipped with a 3-in-1 wheel kit as standard. This convenient feature enhances the mower’s usability, providing wheels for easy transportation across paths or driveways. The wheels can also be engaged during mowing to offer extra stability and support in particularly challenging areas, giving the operator greater control. For taller users or those needing extra reach, an optional Handle Extension Kit is available separately.
As an authorised UK dealer for Cobra, Sims Garden Machinery offers more than just a box. With over a century of experience, the team provides unparalleled support. For local customers, this machine includes a complimentary Pre-Delivery Inspection (PDI) by our trained mechanics, ensuring it is fully assembled, tested, and ready to use. This service, along with a handover demonstration and local delivery, is available from our Stratford-upon-Avon showroom, where our trained sales staff can provide expert advice.
Our team is here to help. Contact us today for expert advice.
Technical Specification
| Engine | B&S 575EX Ready Start |
| Displacement | 140cc |
| Power Type | Petrol |
| Drive | Hand Propelled / Hover |
| Cutting Width | 51cm / 20″ |
| Height Adjustment | 2 Stage |
| Cuts on Slopes up to | 45° |
| Deck Material | ABS Injection Moulded |
| Folding Handles | Yes |
| Wheel Kit Included | Yes |
| Weight | 20kg |
| Domestic Warranty | 2 Years |
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 — not pushy sales
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
Established, independent family business
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
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