Head to head
Bockmann Big Portax WCF -Stall- vs Ifor Williams HB506
The Bockmann Big Portax WCF -Stall- is 99cm (3ft) longer inside and is 19cm wider inside.
Last reviewed 13 September 2026
Key differences
- Internal length: the Bockmann Big Portax WCF -Stall- is 99cm (3ft) longer inside.
- Internal width: the Bockmann Big Portax WCF -Stall- is 19cm wider inside.
- Gross weight: the Bockmann Big Portax WCF -Stall- is rated 100kg heavier gross.
Specifications side by side
| Bockmann Big Portax WCF -Stall- | Ifor Williams HB506 | |
|---|---|---|
| Gross weight | 2700kg | 2,600kg |
| Internal length | 4150mm | 3.16m |
| Internal width | 1855mm | 1.67m |
| Payload | 1310kg | - |
| Internal height | 2400mm | - |
| Unladen weight | - | 920kg |
| Brakes | - | Braked |
Sources: Bockmann Big Portax WCF -Stall-, Ifor Williams HB506. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Big Portax WCF -Stall- if...
- you want one that is 99cm (3ft) longer inside
- you want one that is 19cm wider inside
- you want one that is rated 100kg heavier gross
The largest Portax body with a walk-in tack room and a stall-type partition rather than a fixed centre post, aimed at owners of big horses or those who want to load side by side. It is a step up in space from the standard Big Portax.
Listed by
- Böckmann UK Trailers & Horseboxes - Cinderford, Littledean
Buy or hire 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.
Listed by
- R M Trailer Centre - Middlesbrough, North Ormesby
- Blains Trailers & Tyres - Hemel Hempstead, Great Gaddesden
- Horse Trailer Sales - Robertsbridge, Staplecross
- Barnwell Trailers Ltd - Peterborough, Oundle, Barnwell
Common questions
What is the difference between the Bockmann Big Portax WCF -Stall- and the Ifor Williams HB506?
The Bockmann Big Portax WCF -Stall- is 99cm (3ft) longer inside and is 19cm wider inside. The Bockmann Big Portax WCF -Stall- is a large aluminium horse trailer with a stall partition system; the Ifor Williams HB506 is a two-horse trailer, twin axle.
Can I tow the Bockmann Big Portax WCF -Stall- or the Ifor Williams HB506 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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