Head to head
Ifor Williams HB506 vs Richardson Trailers Supreme Ultra
The Ifor Williams HB506 is 180kg lighter empty. The Richardson Trailers Supreme Ultra is 38cm (1ft) longer inside and is 13cm wider inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Richardson Trailers Supreme Ultra weighs 180kg more empty.
- Internal length: the Richardson Trailers Supreme Ultra is 38cm (1ft) longer inside.
- Internal width: the Richardson Trailers Supreme Ultra is 13cm wider inside.
Specifications side by side
| Ifor Williams HB506 | Richardson Trailers Supreme Ultra | |
|---|---|---|
| Unladen weight | 920kg | 1100 kg |
| Internal length | 3.16m | 3.54 m (11 ft 7 in) |
| Internal width | 1.67m | 1.80 m (5 ft 11 in) |
| Gross weight | 2,600kg | - |
| Brakes | Braked | - |
| Maximum gross weight | - | 3200 kg |
| Overall length | - | 5.00 m (16 ft 5 in) |
Sources: Ifor Williams HB506, Richardson Trailers Supreme Ultra. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB506 if...
- you want one that is 180kg lighter empty
The mainstream two-horse trailer in Britain, used by private owners and small yards. Its comparatively low unladen weight for the class is the practical point: it widens the range of 4x4s and large SUVs that can legally and comfortably tow it.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
- Horse Trailer Sales - Robertsbridge, Staplecross
- R M Trailer Centre - Middlesbrough, North Ormesby
Buy or hire the Supreme Ultra if...
- you want one that is 38cm (1ft) 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 HB506 and the Richardson Trailers Supreme Ultra?
The Ifor Williams HB506 is 180kg lighter empty. The Richardson Trailers Supreme Ultra is 38cm (1ft) longer inside and is 13cm wider inside. The Ifor Williams HB506 is a two-horse trailer, twin axle; 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 HB506 or the Richardson Trailers Supreme Ultra?
The Ifor Williams HB506. It is 180kg lighter empty than the Richardson Trailers Supreme Ultra.
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