Head to head
Brian James Race Box vs Ifor Williams HB403
The Brian James Race Box carries 1,052kg more and is rated 1.4 tonnes heavier gross.
Last reviewed 13 September 2026
Key differences
- Payload: the Brian James Race Box carries 1,052kg more.
- Gross weight: the Brian James Race Box is rated 1.4 tonnes heavier gross.
- Internal width: the Brian James Race Box is 65cm (2ft) wider inside.
- Internal length: the Brian James Race Box is 92cm (3ft) longer inside.
Specifications side by side
| Brian James Race Box | Ifor Williams HB403 | |
|---|---|---|
| Gross weight | 3000kg | 1600kg |
| Payload | up to 1885kg | 833kg |
| Internal width | 1.95m | 1.30m |
| Internal length | 4.0m / 4.5m / 5.0m | 3.08m |
| Axles | Twin | - |
| Unladen weight | - | 767kg |
Sources: Brian James Race Box, Ifor Williams HB403. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Race Box if...
- you want one that carries 1,052kg more
- you want one that is rated 1.4 tonnes heavier gross
- you want one that is 65cm (2ft) wider inside
- you want one that is 92cm (3ft) longer inside
Positioned for classic car owners and smaller motorsport teams who want their car fully enclosed and weatherproof but do not need the wider bed of the Race Sport or Race Transporter ranges. The narrower internal width suits a single classic or compact race car rather than a modern GT car.
Listed by
- Formula Trailers,, Brian-James Trailers Main Dealer in the SW UK - Wellington, Poole
Buy or hire the HB403 if...
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 Box and the Ifor Williams HB403?
The Brian James Race Box carries 1,052kg more and is rated 1.4 tonnes heavier gross. The Brian James Race Box is a a fully enclosed twin-axle car transporter for classics and small race cars; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.
Which carries more, the Brian James Race Box or the Ifor Williams HB403?
The Brian James Race Box, by 1,052kg.
Can I tow the Brian James Race Box 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.
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.