Head to head
Equi-Trek Space-Treka III vs Ifor Williams HB511
The Ifor Williams HB511 is 500kg lighter empty. The Equi-Trek Space-Treka III is rated 800kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Equi-Trek Space-Treka III weighs 500kg more empty.
- Gross weight: the Equi-Trek Space-Treka III is rated 800kg heavier gross.
Specifications side by side
| Equi-Trek Space-Treka III | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 3500kg | 2,700kg |
| Unladen weight | 1500kg | 1,000kg |
| Brakes | Braked (four fully braked wheels) | Braked |
| Axles | 2 | - |
| Internal length | - | 3.52m |
| Internal width | - | 1.79m |
Sources: Equi-Trek Space-Treka III, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Space-Treka III if...
- you want one that is rated 800kg heavier gross
The current version of Equi-Trek's Space-Treka trailer, giving a generous horse area plus a separate living/tack space in a twin-axle chassis. It suits owners who want overnight facilities without moving to a triaxle model.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Horse Trailer Sales - Robertsbridge, Staplecross
- Trek-Trailers Three Counties - Hereford
Buy or hire the HB511 if...
- you want one that is 500kg lighter empty
The wider step up from the HB506, for larger horses or owners who want more room in transit. The extra 12cm of internal width and 36cm of length cost 80kg unladen, which is worth checking against your tow vehicle before choosing it over the HB506.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Trek-Trailers Three Counties - Hereford
Common questions
What is the difference between the Equi-Trek Space-Treka III and the Ifor Williams HB511?
The Ifor Williams HB511 is 500kg lighter empty. The Equi-Trek Space-Treka III is rated 800kg heavier gross. The Equi-Trek Space-Treka III is a trailer with a large horse area and separate living space; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Which is lighter, the Equi-Trek Space-Treka III or the Ifor Williams HB511?
The Ifor Williams HB511. It is 500kg lighter empty than the Equi-Trek Space-Treka III.
Can I tow the Equi-Trek Space-Treka III or the Ifor Williams HB511 on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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