Head to head
Bockmann Portax L K vs Brian James Race Transporter 4
The Brian James Race Transporter 4 carries 1,002kg more and is rated 1 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Brian James Race Transporter 4 carries 1,002kg more.
- Gross weight: the Brian James Race Transporter 4 is rated 1 tonnes heavier gross.
- Internal width: the Brian James Race Transporter 4 is 37cm (1ft) wider inside.
Specifications side by side
| Bockmann Portax L K | Brian James Race Transporter 4 | |
|---|---|---|
| Gross weight | 2500kg | 3500kg |
| Payload | 1318kg | up to 2320kg |
| Internal width | 1750mm | 2.12m |
| Internal length | 4125mm | - |
| Internal height | 2300mm | - |
| Unladen weight | - | from 1180kg |
| Internal bed | - | 5.0m / 5.5m long |
| Axles | - | Twin |
Sources: Bockmann Portax L K, Brian James Race Transporter 4. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Portax L K if...
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 Race Transporter 4 if...
- you want one that carries 1,002kg more
- you want one that is rated 1 tonnes heavier gross
- you want one that is 37cm (1ft) wider inside
Aimed at motorsport teams and vehicle recovery operators who need a hydraulic tilt-bed for easy low loading of a single car. It is the entry point into the numbered Race Transporter range, below the 5, 6 and 7.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Bicester Trailer Centre - Bicester
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Trek-Trailers Three Counties - Hereford
Common questions
What is the difference between the Bockmann Portax L K and the Brian James Race Transporter 4?
The Brian James Race Transporter 4 carries 1,002kg more and is rated 1 tonnes heavier gross. The Bockmann Portax L K is a long-wheelbase aluminium 2-horse trailer with front exit; the Brian James Race Transporter 4 is a an open twin-axle hydraulic tilt-bed car transporter.
Which carries more, the Bockmann Portax L K or the Brian James Race Transporter 4?
The Brian James Race Transporter 4, by 1,002kg.
Can I tow the Bockmann Portax L K or the Brian James Race Transporter 4 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.
GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.