Head to head
Ifor Williams HB510XL vs Ifor Williams HBX506
The Ifor Williams HBX506 is 425kg lighter empty. The Ifor Williams HB510XL is rated 900kg heavier gross and is 99cm (3ft) longer inside.
Last reviewed 13 September 2026
Key differences
- Unladen weight: the Ifor Williams HB510XL weighs 425kg more empty.
- Gross weight: the Ifor Williams HB510XL is rated 900kg heavier gross.
- Internal length: the Ifor Williams HB510XL is 99cm (3ft) longer inside.
- Payload: the Ifor Williams HB510XL carries 475kg more.
- Internal width: the Ifor Williams HB510XL is 7cm wider inside.
Specifications side by side
| Ifor Williams HB510XL | Ifor Williams HBX506 | |
|---|---|---|
| Gross weight | 3500kg | 2600kg |
| Unladen weight | 1290kg | 865kg |
| Payload | 2210kg | 1735kg |
| Internal length | 4.25m | 3.26m |
| Internal width | 1.74m | 1.67m |
Sources: Ifor Williams HB510XL, Ifor Williams HBX506. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the HB510XL if...
- you want one that is rated 900kg heavier gross
- you want one that is 99cm (3ft) longer inside
- you want one that carries 475kg more
- you want one that is 7cm wider 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
Buy or hire the HBX506 if...
- you want one that is 425kg lighter empty
A mid-size horsebox for owners moving one or two horses who want the updated HBX styling and features rather than the standard HB range trailer.
Listed by
- R M Trailer Centre - Middlesbrough, North Ormesby
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Ifor Williams HB510XL and the Ifor Williams HBX506?
The Ifor Williams HBX506 is 425kg lighter empty. The Ifor Williams HB510XL is rated 900kg heavier gross and is 99cm (3ft) longer inside. The Ifor Williams HB510XL is a an extra-length double horsebox trailer; the Ifor Williams HBX506 is a a double horsebox trailer from Ifor Williams' HBX range.
Which is lighter, the Ifor Williams HB510XL or the Ifor Williams HBX506?
The Ifor Williams HBX506. It is 425kg lighter empty than the Ifor Williams HB510XL.
Which carries more, the Ifor Williams HB510XL or the Ifor Williams HBX506?
The Ifor Williams HB510XL, by 475kg.
Can I tow the Ifor Williams HB510XL or the Ifor Williams HBX506 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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