Head to head
Ifor Williams GP126 vs Ifor Williams HB403
The Ifor Williams GP126 is rated 1.9 tonnes heavier gross and is 48cm (1.5ft) wider inside. The Ifor Williams HB403 is 13kg lighter empty.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Ifor Williams GP126 is rated 1.9 tonnes heavier gross.
- Internal width: the Ifor Williams GP126 is 48cm (1.5ft) wider inside.
- Internal length: the Ifor Williams GP126 is 58cm (2ft) longer inside.
- Unladen weight: the Ifor Williams GP126 weighs 13kg more empty.
Specifications side by side
| Ifor Williams GP126 | Ifor Williams HB403 | |
|---|---|---|
| Gross weight | 3500kg | 1600kg |
| Unladen weight | 780kg (skids) or 795kg (ramp) | 767kg |
| Internal length | 3.66m/12' | 3.08m |
| Internal width | 1.78m/5'10" | 1.30m |
| Payload | - | 833kg |
Sources: Ifor Williams GP126, Ifor Williams HB403. 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 rated 1.9 tonnes heavier gross
- you want one that is 48cm (1.5ft) wider inside
- you want one that is 58cm (2ft) longer 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 HB403 if...
- you want one that is 13kg 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 Ifor Williams GP126 and the Ifor Williams HB403?
The Ifor Williams GP126 is rated 1.9 tonnes heavier gross and is 48cm (1.5ft) wider inside. The Ifor Williams HB403 is 13kg lighter empty. The Ifor Williams GP126 is a general purpose plant trailer; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.
Which is lighter, the Ifor Williams GP126 or the Ifor Williams HB403?
The Ifor Williams HB403. It is 13kg lighter empty than the Ifor Williams GP126.
Can I tow the Ifor Williams GP126 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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