Head to head
Ifor Williams GH94BT vs Ifor Williams HB510XL
The Ifor Williams GH94BT is 760kg lighter empty. The Ifor Williams HB510XL is rated 800kg heavier gross and carries 40kg more.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB510XL weighs 760kg more empty.
- Gross weight: the Ifor Williams HB510XL is rated 800kg heavier gross.
- Payload: the Ifor Williams HB510XL carries 40kg more.
Specifications side by side
| Ifor Williams GH94BT | Ifor Williams HB510XL | |
|---|---|---|
| Gross weight | 2700kg | 3500kg |
| Unladen weight | 530kg | 1290kg |
| Payload | 2170kg | 2210kg |
| Internal bed | 2.79m x 1.31m | - |
| Internal length | - | 4.25m |
| Internal width | - | 1.74m |
Sources: Ifor Williams GH94BT, Ifor Williams HB510XL. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the GH94BT if...
- you want one that is 760kg lighter empty
Chosen over the standard GH94 by operators who want the heavier-duty BT chassis and tyres for regular loaded towing rather than occasional use, at the cost of a little unladen weight and payload.
Listed by
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Buy or hire the HB510XL if...
- you want one that is rated 800kg heavier gross
- you want one that carries 40kg more
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 GH94BT and the Ifor Williams HB510XL?
The Ifor Williams GH94BT is 760kg lighter empty. The Ifor Williams HB510XL is rated 800kg heavier gross and carries 40kg more. The Ifor Williams GH94BT is a a braked-tandem version of the GH94 plant trailer; the Ifor Williams HB510XL is a an extra-length double horsebox trailer.
Which is lighter, the Ifor Williams GH94BT or the Ifor Williams HB510XL?
The Ifor Williams GH94BT. It is 760kg lighter empty than the Ifor Williams HB510XL.
Which carries more, the Ifor Williams GH94BT or the Ifor Williams HB510XL?
The Ifor Williams HB510XL, by 40kg.
Can I tow the Ifor Williams GH94BT 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.
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