Head to head
Bockmann Big Portax WCF -Stall- vs Brian James Race Box
The Brian James Race Box carries 575kg more and is rated 300kg heavier gross. The Bockmann Big Portax WCF -Stall- is 15cm longer inside.
Last reviewed 13 September 2026
Key differences
- Payload: the Brian James Race Box carries 575kg more.
- Gross weight: the Brian James Race Box is rated 300kg heavier gross.
- Internal width: the Brian James Race Box is 10cm wider inside.
- Internal length: the Bockmann Big Portax WCF -Stall- is 15cm longer inside.
Specifications side by side
| Bockmann Big Portax WCF -Stall- | Brian James Race Box | |
|---|---|---|
| Gross weight | 2700kg | 3000kg |
| Payload | 1310kg | up to 1885kg |
| Internal length | 4150mm | 4.0m / 4.5m / 5.0m |
| Internal width | 1855mm | 1.95m |
| Internal height | 2400mm | - |
| Axles | - | Twin |
Sources: Bockmann Big Portax WCF -Stall-, Brian James Race Box. 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 15cm longer inside
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 Race Box if...
- you want one that carries 575kg more
- you want one that is rated 300kg heavier gross
- you want one that is 10cm wider inside
Positioned for classic car owners and smaller motorsport teams who want their car fully enclosed and weatherproof but do not need the wider bed of the Race Sport or Race Transporter ranges. The narrower internal width suits a single classic or compact race car rather than a modern GT car.
Listed by
- Formula Trailers,, Brian-James Trailers Main Dealer in the SW UK - Wellington, Poole
Common questions
What is the difference between the Bockmann Big Portax WCF -Stall- and the Brian James Race Box?
The Brian James Race Box carries 575kg more and is rated 300kg heavier gross. The Bockmann Big Portax WCF -Stall- is 15cm longer inside. The Bockmann Big Portax WCF -Stall- is a large aluminium horse trailer with a stall partition system; the Brian James Race Box is a a fully enclosed twin-axle car transporter for classics and small race cars.
Which carries more, the Bockmann Big Portax WCF -Stall- or the Brian James Race Box?
The Brian James Race Box, by 575kg.
Can I tow the Bockmann Big Portax WCF -Stall- or the Brian James Race Box 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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