Head to head
Ifor Williams HBX506 vs Richardson Trailers Supreme Treble
The Ifor Williams HBX506 is 395kg lighter empty. The Richardson Trailers Supreme Treble is rated 100kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Richardson Trailers Supreme Treble weighs 395kg more empty.
- Gross weight: the Richardson Trailers Supreme Treble is rated 100kg heavier gross.
Specifications side by side
| Ifor Williams HBX506 | Richardson Trailers Supreme Treble | |
|---|---|---|
| Gross weight | 2600kg | 2,700kg |
| Unladen weight | 865kg | 1,260kg |
| Payload | 1735kg | - |
| Internal length | 3.26m | - |
| Internal width | 1.67m | - |
| Capacity | - | 2 horses forward, 1 pony reversed |
| External dimensions | - | 5.40m long x 2.29m wide x 2.75m high |
| Internal dimensions | - | 3.54m long x 1.80m wide x 2.33m high |
Sources: Ifor Williams HBX506, Richardson Trailers Supreme Treble. 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 395kg 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 Treble if...
- you want one that is rated 100kg heavier gross
A three-berth Richardson trailer built for a household with two horses and a pony rather than a full string. The reversed pony bay keeps overall length down compared with three forward-facing berths, which suits smaller yards and tow vehicles.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Ifor Williams HBX506 and the Richardson Trailers Supreme Treble?
The Ifor Williams HBX506 is 395kg lighter empty. The Richardson Trailers Supreme Treble is rated 100kg heavier gross. The Ifor Williams HBX506 is a a double horsebox trailer from Ifor Williams' HBX range; the Richardson Trailers Supreme Treble is a trailer for two horses and a pony, one forward one reversed.
Which is lighter, the Ifor Williams HBX506 or the Richardson Trailers Supreme Treble?
The Ifor Williams HBX506. It is 395kg lighter empty than the Richardson Trailers Supreme Treble.
Can I tow the Ifor Williams HBX506 or the Richardson Trailers Supreme Treble 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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