Head to head
Brian James Race Transporter 4 vs Ifor Williams HB403
The Brian James Race Transporter 4 carries 1,487kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is 413kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Payload: the Brian James Race Transporter 4 carries 1,487kg more.
- Gross weight: the Brian James Race Transporter 4 is rated 1.9 tonnes heavier gross.
- Internal width: the Brian James Race Transporter 4 is 82cm (2.5ft) wider inside.
- Unladen weight: the Brian James Race Transporter 4 weighs 413kg more empty.
Specifications side by side
| Brian James Race Transporter 4 | Ifor Williams HB403 | |
|---|---|---|
| Gross weight | 3500kg | 1600kg |
| Unladen weight | from 1180kg | 767kg |
| Payload | up to 2320kg | 833kg |
| Internal width | 2.12m | 1.30m |
| Internal bed | 5.0m / 5.5m long | - |
| Axles | Twin | - |
| Internal length | - | 3.08m |
Sources: Brian James Race Transporter 4, Ifor Williams HB403. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Race Transporter 4 if...
- you want one that carries 1,487kg more
- you want one that is rated 1.9 tonnes heavier gross
- you want one that is 82cm (2.5ft) 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
Buy or hire the HB403 if...
- you want one that is 413kg lighter empty
The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Brian James Race Transporter 4 and the Ifor Williams HB403?
The Brian James Race Transporter 4 carries 1,487kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is 413kg lighter empty. The Brian James Race Transporter 4 is a an open twin-axle hydraulic tilt-bed car transporter; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.
Which is lighter, the Brian James Race Transporter 4 or the Ifor Williams HB403?
The Ifor Williams HB403. It is 413kg lighter empty than the Brian James Race Transporter 4.
Which carries more, the Brian James Race Transporter 4 or the Ifor Williams HB403?
The Brian James Race Transporter 4, by 1,487kg.
Can I tow the Brian James Race Transporter 4 or the Ifor Williams HB403 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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