Head to head
Bockmann Portax L K vs Richardson Trailers Supreme Ultra
The Bockmann Portax L K is 59cm (2ft) longer inside. The Richardson Trailers Supreme Ultra is 5cm wider inside.
Last reviewed 13 September 2026
Key differences
- Internal length: the Bockmann Portax L K is 59cm (2ft) longer inside.
- Internal width: the Richardson Trailers Supreme Ultra is 5cm wider inside.
Specifications side by side
| Bockmann Portax L K | Richardson Trailers Supreme Ultra | |
|---|---|---|
| Internal length | 4125mm | 3.54 m (11 ft 7 in) |
| Internal width | 1750mm | 1.80 m (5 ft 11 in) |
| Gross weight | 2500kg | - |
| Payload | 1318kg | - |
| Internal height | 2300mm | - |
| Maximum gross weight | - | 3200 kg |
| Unladen weight | - | 1100 kg |
| Overall length | - | 5.00 m (16 ft 5 in) |
Sources: Bockmann Portax L K, Richardson Trailers Supreme Ultra. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Portax L K if...
- you want one that is 59cm (2ft) longer inside
The longer 'L' version of the Portax K, giving taller or bigger horses more room while keeping the front-exit layout. It appeals to owners of warmbloods or cobs who found the standard Portax K too tight.
Listed by
- Böckmann UK Trailers & Horseboxes - Cinderford, Littledean
Buy or hire the Supreme Ultra if...
- you want one that is 5cm 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 Bockmann Portax L K and the Richardson Trailers Supreme Ultra?
The Bockmann Portax L K is 59cm (2ft) longer inside. The Richardson Trailers Supreme Ultra is 5cm wider inside. The Bockmann Portax L K is a long-wheelbase aluminium 2-horse trailer with front exit; the Richardson Trailers Supreme Ultra is a a two-horse trailer from British manufacturer Richardson, part of its Supreme range of horse trailers..
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