Head to head
Ifor Williams HBX506 vs Richardson Trailers Supreme Ultra
The Ifor Williams HBX506 is 235kg lighter empty. The Richardson Trailers Supreme Ultra is 28cm longer inside and is 13cm wider inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Richardson Trailers Supreme Ultra weighs 235kg more empty.
- Internal length: the Richardson Trailers Supreme Ultra is 28cm longer inside.
- Internal width: the Richardson Trailers Supreme Ultra is 13cm wider inside.
Specifications side by side
| Ifor Williams HBX506 | Richardson Trailers Supreme Ultra | |
|---|---|---|
| Unladen weight | 865kg | 1100 kg |
| Internal length | 3.26m | 3.54 m (11 ft 7 in) |
| Internal width | 1.67m | 1.80 m (5 ft 11 in) |
| Gross weight | 2600kg | - |
| Payload | 1735kg | - |
| Maximum gross weight | - | 3200 kg |
| Overall length | - | 5.00 m (16 ft 5 in) |
Sources: Ifor Williams HBX506, Richardson Trailers Supreme Ultra. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HBX506 if...
- you want one that is 235kg lighter empty
A mid-size horsebox for owners moving one or two horses who want the updated HBX styling and features rather than the standard HB range trailer.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
- East Midlands Trailers - Leicester, Thrussington
- R M Trailer Centre - Middlesbrough, North Ormesby
Buy or hire the Supreme Ultra if...
- you want one that is 28cm longer inside
- you want one that is 13cm wider inside
The Supreme Ultra suits owners looking for a well-established British-built two-horse trailer able to carry a pair of taller horses, since sellers describe it as taking two horses up to about 17.2hh. As a long-running Richardson model it is more often found on the used market now than ordered new.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Ifor Williams HBX506 and the Richardson Trailers Supreme Ultra?
The Ifor Williams HBX506 is 235kg lighter empty. The Richardson Trailers Supreme Ultra is 28cm longer inside and is 13cm wider inside. The Ifor Williams HBX506 is a a double horsebox trailer from Ifor Williams' HBX range; the Richardson Trailers Supreme Ultra is a a two-horse trailer from British manufacturer Richardson, part of its Supreme range of horse trailers..
Which is lighter, the Ifor Williams HBX506 or the Richardson Trailers Supreme Ultra?
The Ifor Williams HBX506. It is 235kg lighter empty than the Richardson Trailers Supreme Ultra.
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