Head to head
Ifor Williams GP126 vs Ifor Williams HB510XL
The Ifor Williams GP126 is 510kg lighter empty and is 4cm wider inside. The Ifor Williams HB510XL is 59cm (2ft) longer inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB510XL weighs 510kg more empty.
- Internal length: the Ifor Williams HB510XL is 59cm (2ft) longer inside.
- Internal width: the Ifor Williams GP126 is 4cm wider inside.
Specifications side by side
| Ifor Williams GP126 | Ifor Williams HB510XL | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 780kg (skids) or 795kg (ramp) | 1290kg |
| Internal length | 3.66m/12' | 4.25m |
| Internal width | 1.78m/5'10" | 1.74m |
| Payload | - | 2210kg |
Sources: Ifor Williams GP126, Ifor Williams HB510XL. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GP126 if...
- you want one that is 510kg lighter empty
- you want one that is 4cm wider inside
A twin-axle general purpose trailer from Ifor Williams's plant range, used to carry mini diggers, dumpers and other small plant, or general building materials. Available with loading ramps or skids.
Listed by
- East Midlands Trailers - Leicester, Thrussington
Buy or hire the HB510XL if...
- you want one that is 59cm (2ft) longer inside
For owners of taller or longer horses who find the standard HB511 too tight, giving extra internal length on the same 3500kg chassis so it stays towable by a suitably rated 4x4.
Listed by
- Horse Trailer Sales - Robertsbridge, Staplecross
Common questions
What is the difference between the Ifor Williams GP126 and the Ifor Williams HB510XL?
The Ifor Williams GP126 is 510kg lighter empty and is 4cm wider inside. The Ifor Williams HB510XL is 59cm (2ft) longer inside. The Ifor Williams GP126 is a general purpose plant trailer; the Ifor Williams HB510XL is a an extra-length double horsebox trailer.
Which is lighter, the Ifor Williams GP126 or the Ifor Williams HB510XL?
The Ifor Williams GP126. It is 510kg lighter empty than the Ifor Williams HB510XL.
Can I tow the Ifor Williams GP126 or the Ifor Williams HB510XL 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.