• Cobra Fortis 17B petrol cylinder lawnmower
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Cobra Fortis 17B

Cobra Fortis 17B

£1,185.00
£1,249.00 £1,185.00
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Taxes included. Shipping calculated at checkout.
  • ✓Briggs & Stratton XR550 engine
  • ✓43cm / 17" cutting width for mid-large lawns
  • ✓Self-propelled, 4.2 km/h at 2800 rpm
  • ✓6-blade cutting cylinder for an ultra-fine finish
  • ✓Cutting height 6-30mm (3-30mm with 10-blade cartridge)
  • ✓Interchangeable Fortis cartridge system
  • ✓Steel front roller & cast ribbed split rear roller for classic stripes
  • ✓65L grass box
  • ✓2-year domestic warranty
✓ 2 years warranty✓ 30-day returns✓ UK support

Ships direct from Cobra (not from Mowd), typically 2–5 business days. Delivery £9.95.

Good to know
  • ✓Best for mid to large lawns & fine striping
  • ✓Engine: Briggs & Stratton XR550 (127cc)
  • ✓2 years warranty
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The Cobra Fortis 17B petrol cylinder mower features a 17" cutting width, 6-blade cylinder and Briggs & Stratton XR550 engine. With a cast split ribbed rear roller and adjustable height from 6mm to 30mm, it delivers a finely striped, precision-cut lawn. Fully compatible with the Fortis cartridge system.

Specifications

Cutting width
43 cm
Cutting height
6–30mm (3–30mm with optional 10-blade cylinder)
Type
Cylinder
Drive
Self-propelled
Power
Petrol
Engine
Briggs & Stratton XR550 (127cc)
Grass box
65 L
Weight
84 kg
Warranty
2 years
Briggs & Stratton XR550 engine on the Cobra Fortis 17B

Briggs & Stratton XR550 engine

Powered by a Briggs & Stratton XR550 engine. A powerful engine is part of maintaining a beautiful, healthy lawn - B&S engines are easy to start and provide all the power and speed you need to cut your grass with ease and precision.

17 inch 6-blade cutting cylinder on the Fortis 17B

17" / 43cm cutting cylinder

The Fortis 17B is fitted with a finely crafted 17" 6-blade cutting cylinder, with razor-sharp blades that deliver a remarkable 95 cuts per metre (clip rate) and a clean, precise cut every time. This keeps the lawn pristine and even, cutting cleanly at the desired height to promote healthier growth and a lusher lawn.

Heavy-duty drive system on the Cobra Fortis range

Heavy-duty drive

The heavy-duty drive system on the Cobra Fortis range offers improved performance and increased durability. Designed for the Fortis interchangeable cartridge system, it provides easy user maintenance and adjustment, and is engineered for smooth operation under the most demanding conditions.

Interchangeable Fortis cartridge system attachments

Fortis cartridge system

What makes the Fortis machines the ultimate in lawncare is their ability to transform into other machines to keep lawns immaculate and healthy. Cartridges include a verticutter, scarifier, dethatcher, aerator, lawn brush and ten-blade cylinder.

Single-knob cutting height adjustment on the Fortis

6–30mm cut heights

Easily adjust your cutting height from 6-30mm for the perfect finish (3-30mm with the optional 10-blade cylinder), using the single height-adjustment knob conveniently positioned at the front of your Fortis.

Why buy from Mowd?

Genuine Cobra machines

Supplied as official Cobra products with full manufacturer warranty and support.

Built to last

Professional-grade build quality designed for years of reliable use.

Ships direct from Cobra

Dispatched directly from Cobra — see the delivery note above for timings.

Expert UK support

Plain-English advice and UK-based help, with warranty service handled by Cobra.

Ready to upgrade your mow?

Petrol, electric, or push, we've got a mower for everyone.

Frequently asked questions

How does the warranty work?
Your mower comes with the manufacturer's warranty. Warranty claims and repairs are handled directly by Cobra Support, and you'll need to register your machine with Cobra to activate cover - see the documentation supplied with the mower for details.
How is my mower delivered?
Mowers ship directly from Cobra (not from Mowd), typically within 2-5 business days. Delivery is £9.95.
Can I return it?
Yes - you have 30 days to return an unused mower, plus your statutory 14-day right to cancel. Get in touch and we'll arrange it.

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