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Head to head

Ifor Williams HB506 vs Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)

The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is rated 900kg heavier gross and is 105kg lighter empty.

Last reviewed 13 September 2026

Ifor Williams HB506
Ifor Williams HB506 - image: Norfolk Trailers
Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)
Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) - image: Indespension

Key differences

Specifications side by side

Ifor Williams HB506Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)
Gross weight2,600kg3500kg
Unladen weight920kg815kg
Internal length3.16m-
Internal width1.67m-
BrakesBraked-
Payload-2685kg
Internal size-3.65 x 1.83
Bed height-430mm

Sources: Ifor Williams HB506, Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED). Figures vary by model year and options, so check with the supplier before you commit.

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.

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Full HB506 specifications →

Buy or hire the Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) if...

  • you want one that is rated 900kg heavier gross
  • you want one that is 105kg lighter empty

The larger Challenger 50 beavertail for bigger mini excavators and compact plant. Used by groundworks firms and hire fleets that need extra bed length.

Full Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) specifications →

Common questions

What is the difference between the Ifor Williams HB506 and the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)?

The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is rated 900kg heavier gross and is 105kg lighter empty. The Ifor Williams HB506 is a two-horse trailer, twin axle; the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) is a 12 ft x 6 ft 3.5 tonne beavertail plant trailer.

Which is lighter, the Ifor Williams HB506 or the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED)?

The Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED). It is 105kg lighter empty than the Ifor Williams HB506.

Can I tow the Ifor Williams HB506 or the Indespension Challenger 50 Beavertail 12 x 6 (AD35126BTSLED) 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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