Head to head
Bockmann KT-PB-AL 3015/27 M F vs Ifor Williams HB511
The Ifor Williams HB511 is 28cm wider inside and is 27cm longer inside.
Last reviewed 13 September 2026
Key differences
- Internal width: the Ifor Williams HB511 is 28cm wider inside.
- Internal length: the Ifor Williams HB511 is 27cm longer inside.
Specifications side by side
| Bockmann KT-PB-AL 3015/27 M F | Ifor Williams HB511 | |
|---|---|---|
| Gross weight | 2700kg | 2,700kg |
| Internal length | 3255mm | 3.52m |
| Internal width | 1515mm | 1.79m |
| Brakes | Braked (overrun) | Braked |
| Payload | 2045kg | - |
| Internal height | 2093mm | - |
| Axles | 2 | - |
| Unladen weight | - | 1,000kg |
Sources: Bockmann KT-PB-AL 3015/27 M F, Ifor Williams HB511. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the KT-PB-AL 3015/27 M F if...
A low-loading, fully enclosed box trailer aimed at tradespeople who need to carry tools, motorbikes or equipment securely and out of the weather. The low load height makes wheeling heavy items in and out easier than a high-sided box.
Listed by
- Böckmann UK Trailers & Horseboxes - Cinderford, Littledean
Buy or hire the HB511 if...
- you want one that is 28cm wider inside
- you want one that is 27cm longer inside
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.
Listed by
- Trek-Trailers Suffolk - Bury Saint Edmunds
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Trek-Trailers Three Counties - Hereford
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Bockmann KT-PB-AL 3015/27 M F and the Ifor Williams HB511?
The Ifor Williams HB511 is 28cm wider inside and is 27cm longer inside. The Bockmann KT-PB-AL 3015/27 M F is a low-loader box trailer with aluminium body and polyester front; the Ifor Williams HB511 is a two-horse trailer, twin axle, wider body.
Can I tow the Bockmann KT-PB-AL 3015/27 M F or the Ifor Williams HB511 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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