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Cobra Fortis 25B 25" Cylinder Lawnmower
Original price was: £2,099.00.£1,899.00Current price is: £1,899.00. inc. VAT
Cobra Fortis 17B 17" Cylinder Lawnmower
Original price was: £1,249.00.£1,185.00Current price is: £1,185.00. inc. VAT
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Cobra Fortis 20B 20″ Cylinder Lawnmower
Original price was: £1,499.00.£1,399.00Current price is: £1,399.00. inc. VAT
The Cobra Fortis 20B delivers a professional, striped finish for larger lawns. Powered by a reliable Briggs & Stratton engine with a 20″ six-bladed cylinder, it’s built for serious home gardeners and semi-professionals.
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Description
Why buy the Cobra Fortis 20B 20″ Cylinder Lawnmower?
- Powered by a reliable Briggs & Stratton XR550 127cc petrol engine
- Generous 51cm (20″) cutting width for efficient mowing of larger areas
- 6-bladed precision cutting cylinder for a sharp, clean cut
- Self-propelled with a heavy-duty drive system for effortless operation
- Steel front roller and cast ribbed split rear roller for classic lawn stripes
- Large 75-litre grass box for fewer interruptions
Professional Power and Performance
Powered by a robust Briggs & Stratton XR550 127cc engine, the Cobra Fortis 20B is a self-propelled cylinder mower designed for larger lawns where a high-quality finish and long-lasting, defined stripes are a priority. Its heavy-duty construction and well-balanced chassis ensure precision cutting over extended periods, making this lawnmower the ideal choice for serious home gardeners, semi-professionals, and sports groundscare applications.
The Perfect Striped Finish
The finishing touch to any perfect cut is the iconic stripe, and the Fortis 20B excels in this area. It features a heavy steel front roller and a cast ribbed split rear roller, which work in tandem to create enhanced, defined stripes. The standard six-blade precision-ground cutting cylinder delivers a fine, scissor-like cut for a healthier lawn. The cutting height is easily adjusted via a single knob at the front, offering a range from 6mm to 30mm for the perfect lawn height.
Versatile Lawncare System
The Cobra Fortis 20B is more than just a mower; it’s the foundation of a complete lawn care solution. It features a versatile interchangeable cartridge system, allowing for quick and easy tool changes. While it comes with the 6-bladed cylinder, a range of optional cartridges are available to tackle any garden task. These include a 10-bladed cylinder for an even lower 3mm cut (ideal for bowling greens), a scarifier, aerator, dethatcher, verticutter, and a lawn brush. For advice on the right cassette for your needs, contact the trained sales staff at Sims Garden Machinery.
Engineered for Durability and Convenience
The heavy-duty drive system on the Cobra Fortis range offers improved performance and increased durability, engineered to ensure smooth operation under the most demanding conditions. Practical features include innovative quick-release, easy-fold handles for convenient transport and storage without needing tools. The mower is also equipped with a large, 75-litre heavy-duty grass box, whose superior collection system allows for longer mowing sessions before emptying is required.
As an established, authorised UK dealer for Cobra, Sims Garden Machinery provides more than just a machine in a box. With a history stretching back over 100 years, the team offers unparalleled support. For local customers, this Cobra mower comes with a free Pre-Delivery Inspection (PDI), delivery, and a comprehensive handover demonstration to ensure you’re confident from the very first use. All servicing and warranty work is handled on-site in the Stratford-upon-Avon workshop by trained mechanics, while the trained sales staff in the showroom are always available to offer expert advice.
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
| Engine | Briggs & Stratton XR550 |
| Displacement | 127cc |
| Cutting Width | 51cm / 20″ |
| Drive | Self Propelled |
| Cutting Height | 6 – 30mm |
| Cutting Cylinder | 6 Blade |
| Front Roller | Steel |
| Rear Roller | Cast Ribbed Split |
| Interchangeable Cassette System | Available Separately |
| Grass Box | 75ltr |
| Drive System | Heavy Duty |
| Weight | 89.2kg |
| Domestic Warranty | 2 Years |
| Power Type | Petrol |
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.
Frequently Asked Questions
Frequently Asked Questions
Who is the Cobra Fortis 20B suitable for?
It’s designed for serious home gardeners, semi-professionals, and sports groundscare professionals managing larger lawns where a high-quality, striped finish is a priority. Its heavy-duty construction is built for regular, demanding use.
What is the cutting height range of the Fortis 20B?
The standard 6-bladed cylinder provides a cutting height range from 6mm to 30mm. If you opt for the optional 10-bladed cylinder, you can achieve an even lower cut, from 3mm to 30mm.
Can the Cobra Fortis 20B do more than just mow?
Yes, it features an interchangeable cassette system. While the mower comes with a 6-bladed cutting cylinder, you can purchase separate cartridges including a 10-bladed cylinder, scarifier, aerator, dethatcher, verticutter, and lawn brush to perform a full range of lawn care tasks.
How does this mower create such defined lawn stripes?
The iconic lawn stripes are created by the combination of a steel front roller and a heavy cast ribbed split rear roller. These rollers bend the grass blades in the direction of travel, and the light reflecting off them creates the classic striped effect.
User Manuals / Downloads
Additional information
| Brand | Cobra |
|---|---|
| Blade Brake ClutchIndicates if the blade can be stopped while the engine keeps running. | FALSE |
| Collector SizeThe capacity of the grass collection bag or box in litres. | 75 |
| 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). | Self-Propelled |
| Electric StartIndicates if the machine features a key or push-button electric starter. | FALSE |
| Mowing FunctionsAvailable mowing modes (e.g., Collection, Mulching, Side-Discharge). | [“Collection”] |
| Rear RollerIndicates if the mower features a rear roller for creating lawn stripes. | TRUE |
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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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