Head to head
Bockmann Portax K vs Brian James C4 Transporter
The Bockmann Portax K is a aluminium 2-horse trailer with front exit. The Brian James C4 Transporter is a car transporter trailer.
Last reviewed 13 September 2026
Specifications side by side
| Bockmann Portax K | Brian James C4 Transporter | |
|---|---|---|
| Gross weight | 2400kg | 2000-2600kg (range across C4 variants) |
| Payload | 1265kg | - |
| Internal length | 3560mm | - |
| Internal width | 1750mm | - |
| Internal height | 2350mm | - |
| Deck length | - | 12ft 2in (3.7m) loading area, up to 16ft overall |
| Deck width | - | 5ft 10in - 6ft |
| Axles | - | 2 |
| Ramps | - | 8ft loading ramps included |
Sources: Bockmann Portax K, Brian James C4 Transporter. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Portax K if...
A mid-range Portax with a front unloading ramp, bought by owners who value being able to lead a horse out the front rather than reversing it out. It sits below the Big Portax models in size and price.
Listed by
- Böckmann UK Trailers & Horseboxes - Cinderford, Littledean
Buy or hire the C4 Transporter if...
A twin-axle trailer for moving a single car, van or small plant item, used by garages, racers and recovery firms. It is light enough for many family cars to tow while still carrying a saloon or hatchback on its own wheels.
Listed by
- Lancaster trailer hire - ELY
- Derby Trailer Hire Limited - Derby
Common questions
What is the difference between the Bockmann Portax K and the Brian James C4 Transporter?
The Bockmann Portax K is a aluminium 2-horse trailer with front exit; the Brian James C4 Transporter is a car transporter trailer.
Can I tow the Bockmann Portax K or the Brian James C4 Transporter 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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