Ifor Williams
HB403
a compact single-horse or two-pony horsebox trailer
Last reviewed 13 September 2026
Specifications
| Gross weight | 1600kg |
| Unladen weight | 767kg |
| Payload | 833kg |
| Internal length | 3.08m |
| Internal width | 1.30m |
Figures taken from the manufacturer: source. Specifications change by model year and configuration - confirm with the supplier before relying on them.
Who uses it
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.
Looking for one?
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