Model against model
Ifor Williams HB506 vs Ifor Williams HB511
Two models people put on the same shortlist. Every figure below is sourced, and where one side has a specification the other does not publish, the row is left out rather than filled with a guess.
Last reviewed 13 September 2026
| HB506 | HB511 | |
|---|---|---|
| Gross weight | 2,600kg | 2,700kg |
| Unladen weight | 920kg | 1,000kg |
| Internal length | 3.16m | 3.52m |
| Internal width | 1.67m | 1.79m |
| Brakes | Braked | Braked |
Only specifications published for both models appear here. Full HB506 figures and full HB511 figures.
Choose the HB506 if...
The mainstream two-horse trailer in Britain, used by private owners and small yards. Its comparatively low unladen weight for the class is the practical point: it widens the range of 4x4s and large SUVs that can legally and comfortably tow it.
Full specifications →Choose the HB511 if...
The wider step up from the HB506, for larger horses or owners who want more room in transit. The extra 12cm of internal width and 36cm of length cost 80kg unladen, which is worth checking against your tow vehicle before choosing it over the HB506.
Full specifications →Common questions
What is the difference between the HB506 and the HB511?
Ifor Williams HB506: The mainstream two-horse trailer in Britain, used by private owners and small yards. Its comparatively low unladen weight for the class is the practical point: it widens the range of 4x4s and large SUVs that can legally and comfortably tow it. Ifor Williams HB511: The wider step up from the HB506, for larger horses or owners who want more room in transit. The extra 12cm of internal width and 36cm of length cost 80kg unladen, which is worth checking against your tow vehicle before choosing it over the HB506.
Are these figures reliable?
Every figure on this page was read off a manufacturer or established dealer page and is linked to its source. Anything we could not verify is left out rather than estimated. Specifications change by model year and configuration, so confirm with the supplier before relying on them.
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.