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Head to head

Ifor Williams CT177 vs Ifor Williams HB403

The Ifor Williams CT177 carries 1,862kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is 38kg lighter empty.

Last reviewed 13 September 2026

Ifor Williams CT177
Ifor Williams CT177 - image: Norfolk Trailers
Ifor Williams HB403
Ifor Williams HB403 - image: Barlow Trailers

Key differences

Specifications side by side

Ifor Williams CT177Ifor Williams HB403
Gross weight3500kg1600kg
Unladen weight805kg767kg
Payloadapprox. 2695kg833kg
Overall length6.70m / 22'0"-
Bed5.00m / 16'4" ((internal) length); 1.91m / 6'3" ((internal) width)-
Internal length-3.08m
Internal width-1.30m

Sources: Ifor Williams CT177, Ifor Williams HB403. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the CT177 if...

  • you want one that carries 1,862kg more
  • you want one that is rated 1.9 tonnes heavier gross

The CT177 is built to be wide enough for most light commercial vehicles while remaining narrow enough for smaller cars, making it a common choice for vehicle recovery firms and the motor trade. Its long bed and 3500kg GVW keep it within standard car-licence towing limits for a single vehicle plus ramps.

Listed by

Full CT177 specifications →

Buy or hire the HB403 if...

  • you want one that is 38kg lighter empty

The smallest trailer in the HB horsebox range, bought by owners of a single horse or a couple of ponies who want the lightest legal option that can still be towed by a mid-size car.

Listed by

Full HB403 specifications →

Common questions

What is the difference between the Ifor Williams CT177 and the Ifor Williams HB403?

The Ifor Williams CT177 carries 1,862kg more and is rated 1.9 tonnes heavier gross. The Ifor Williams HB403 is 38kg lighter empty. The Ifor Williams CT177 is a a twin-axle car transporter trailer with a long, narrow bed for single-vehicle recovery and trade use.; the Ifor Williams HB403 is a a compact single-horse or two-pony horsebox trailer.

Which is lighter, the Ifor Williams CT177 or the Ifor Williams HB403?

The Ifor Williams HB403. It is 38kg lighter empty than the Ifor Williams CT177.

Which carries more, the Ifor Williams CT177 or the Ifor Williams HB403?

The Ifor Williams CT177, by 1,862kg.

Can I tow the Ifor Williams CT177 or the Ifor Williams HB403 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.

GetBrent is an independent directory and is not a dealer for, nor affiliated with, either manufacturer. Model and brand names are the trademarks of their owners.