For owners with larger horses, the HB511 is likely to be the natural choice. Being longer and wider than the HB506, the HB511 is suitable for carrying two horses up to 17.2hh.
The HB511 is fitted with a pair of side windows and a larger front inspection window, allowing more light into the trailer.
| Model | Tyres | Gross Weight | Unladen Weight | Internal Length | Internal Width | Internal Height | Overall Width | Overall Length |
| HB403 | 155R13C / 165R13C | 1600kg | 767kg | 3.08m | 1.30m | 2.20m | 1.76m | 4.36m |
| HB506 | 165R13C | 2600kg | 920kg | 3.16m | 1.67m | 2.26m | 2.13m | 4.30m |
| HB511 | 165R13C | 2700kg | 1000kg | 3.52m | 1.79m | 2.26m | 2.26m | 4.65m |
