Head to head
Brian James A Transporter (A4) vs Equi-Trek Super Sonic 4T
The Brian James A Transporter (A4) is a open flatbed car transporter, twin axle. The Equi-Trek Super Sonic 4T is a horsebox or horse trailer.
Last reviewed 13 September 2026
Specifications side by side
| Brian James A Transporter (A4) | Equi-Trek Super Sonic 4T | |
|---|---|---|
| Brakes | Braked, tandem axle | Braked |
| Gross weight | 2,000kg to 3,000kg depending on variant | - |
| Bed | 3.7m x 1.8m up to 5.0m x 2.0m depending on variant | - |
Sources: Brian James A Transporter (A4), Equi-Trek Super Sonic 4T. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the A Transporter (A4) if...
One of the most common car trailers in Britain, bought by trade and private owners for moving road cars, project cars and small vans. The reason it sells is the spread of bed length and gross weight combinations, which lets you match the trailer to the tow car rather than the other way round.
Listed by
- Fieldfare Trailer Centre - Salisbury
- Bicester Trailer Centre - Bicester
- Trek-Trailers Three Counties - Hereford
Buy or hire the Super Sonic 4T if...
Equi-Trek Super Sonic 4T, carried by UK dealers and hire companies listed on GetBrent for sale. Horseboxes and horse trailers like this are chosen by private owners and competition yards moving horses to shows, vets and new yards.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Trek-Trailers Three Counties - Hereford
Common questions
What is the difference between the Brian James A Transporter (A4) and the Equi-Trek Super Sonic 4T?
The Brian James A Transporter (A4) is a open flatbed car transporter, twin axle; the Equi-Trek Super Sonic 4T is a horsebox or horse trailer.
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