Head to head
Ifor Williams HB403 vs Ifor Williams HBE506
The Ifor Williams HBE506 carries 392kg more and is 37cm (1ft) wider inside.
Last reviewed 13 September 2026
Key differences
- Payload: the Ifor Williams HBE506 carries 392kg more.
- Internal width: the Ifor Williams HBE506 is 37cm (1ft) wider inside.
- Gross weight: the Ifor Williams HBE506 is rated 400kg heavier gross.
- Internal length: the Ifor Williams HBE506 is 18cm longer inside.
- Unladen weight: the Ifor Williams HBE506 weighs 8kg more empty.
Specifications side by side
| Ifor Williams HB403 | Ifor Williams HBE506 | |
|---|---|---|
| Gross weight | 1600kg | 2000kg |
| Unladen weight | 767kg | 775kg |
| Payload | 833kg | 1225kg |
| Internal length | 3.08m | 3.26m |
| Internal width | 1.30m | 1.67m |
Sources: Ifor Williams HB403, Ifor Williams HBE506. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB403 if...
- you want one that is 8kg lighter empty
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the HBE506 if...
- you want one that carries 392kg more
- you want one that is 37cm (1ft) wider inside
- you want one that is rated 400kg heavier gross
- you want one that is 18cm longer inside
Aimed at owners who want HB506-sized space for two horses or ponies but need a lower gross weight to stay within a smaller car's towing limit.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams HB403 and the Ifor Williams HBE506?
The Ifor Williams HBE506 carries 392kg more and is 37cm (1ft) wider inside. The Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer; the Ifor Williams HBE506 is a a lighter-weight version of the HB506 double horsebox.
Which is lighter, the Ifor Williams HB403 or the Ifor Williams HBE506?
The Ifor Williams HB403. It is 8kg lighter empty than the Ifor Williams HBE506.
Which carries more, the Ifor Williams HB403 or the Ifor Williams HBE506?
The Ifor Williams HBE506, by 392kg.
Can I tow the Ifor Williams HB403 or the Ifor Williams HBE506 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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