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Brian James Race Box vs PRG Trailers ProLine Beavertail

The Brian James Race Box is a a fully enclosed twin-axle car transporter for classics and small race cars. The PRG Trailers ProLine Beavertail is a prg trailers' open beavertail car trailer range, built with a hinged tail ramp for loading low cars..

Last reviewed 13 September 2026

Brian James Race Box
Brian James Race Box - image: Formula Trailers,, Brian-James Trailers Main Dealer in the SW UK
PRG Trailers ProLine Beavertail
PRG Trailers ProLine Beavertail - image: prgtrailers.co.uk

Specifications side by side

Brian James Race BoxPRG Trailers ProLine Beavertail
Gross weight3000kg3,000kg (twin axle, 10in wheels) up to 3,500kg (twin axle 13in wheels, and all tri axle models)
Payloadup to 1885kg1,975kg to 2,550kg depending on configuration
AxlesTwinTwin or Tri
Internal width1.95m-
Internal length4.0m / 4.5m / 5.0m-
Internal bed-4.88m to 6.40m long, 2.13m or 2.28m wide
Brakes-Braked (Alko AAA self-adjusting brakes)

Sources: Brian James Race Box, PRG Trailers ProLine Beavertail. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the Race Box if...

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.

Full Race Box specifications →

Buy or hire the ProLine Beavertail if...

The ProLine Beavertail suits owners of low-ground-clearance cars, since its beavertail ramp lets a car drive on and off without grounding, unlike a flat-bed transporter. PRG offers it across twin and tri-axle chassis so buyers can match the trailer to a 3000kg or 3500kg tow limit.

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Full ProLine Beavertail specifications →

Common questions

What is the difference between the Brian James Race Box and the PRG Trailers ProLine Beavertail?

The Brian James Race Box is a a fully enclosed twin-axle car transporter for classics and small race cars; the PRG Trailers ProLine Beavertail is a pRG Trailers' open beavertail car trailer range, built with a hinged tail ramp for loading low cars..

Can I tow the Brian James Race Box or the PRG Trailers ProLine Beavertail 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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