Head to head
Brian James Race Transporter 4 vs Ifor Williams GX125 HD
The Ifor Williams GX125 HD is 420kg lighter empty. The Brian James Race Transporter 4 has a bed 1.34m (4.5ft) longer.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Brian James Race Transporter 4 weighs 420kg more empty.
- Internal bed: the Brian James Race Transporter 4 has a bed 1.34m (4.5ft) longer.
Specifications side by side
| Brian James Race Transporter 4 | Ifor Williams GX125 HD | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | from 1180kg | 760kg |
| Payload | up to 2320kg | 2740kg |
| Internal bed | 5.0m / 5.5m long | 3.66m x 1.57m |
| Internal width | 2.12m | - |
| Axles | Twin | - |
Sources: Brian James Race Transporter 4, Ifor Williams GX125 HD. 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 has a bed 1.34m (4.5ft) longer
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 GX125 HD if...
- you want one that is 420kg lighter empty
For plant hire firms carrying longer machines such as excavators with extended dipper arms or tracked dumpers that need the extra bed length over the GX105HD.
Listed by
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
Common questions
What is the difference between the Brian James Race Transporter 4 and the Ifor Williams GX125 HD?
The Ifor Williams GX125 HD is 420kg lighter empty. The Brian James Race Transporter 4 has a bed 1.34m (4.5ft) longer. The Brian James Race Transporter 4 is a an open twin-axle hydraulic tilt-bed car transporter; the Ifor Williams GX125 HD is a a longer heavy-duty plant trailer.
Which is lighter, the Brian James Race Transporter 4 or the Ifor Williams GX125 HD?
The Ifor Williams GX125 HD. It is 420kg lighter empty than the Brian James Race Transporter 4.
Can I tow the Brian James Race Transporter 4 or the Ifor Williams GX125 HD 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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