Head to head
Equi-Trek Sonic 3,500kg vs Humbaur HTK
The Equi-Trek Sonic 3,500kg is a compact 3.5 tonne motorised 2-horse horsebox. The Humbaur HTK is a a tandem-axle three-way tipping trailer for construction and agricultural use.
Last reviewed 13 September 2026
Specifications side by side
| Equi-Trek Sonic 3,500kg | Humbaur HTK | |
|---|---|---|
| Gross weight | 3500kg | 3500kg |
| Unladen weight | 2320kg | - |
| Payload | - | 2550kg |
| Internal bed | - | 3.14m x 1.75m |
| Axles | - | Twin |
| Brakes | - | Braked |
Sources: Equi-Trek Sonic 3,500kg, Humbaur HTK. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Sonic 3,500kg if...
A compact motorised horsebox pitched as easy to drive day to day, for owners of one or two horses who want a small horsebox rather than a trailer and tow car. It is one of Equi-Trek's lower-cost motorised models.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Trek-Trailers Three Counties - Hereford
Buy or hire the HTK if...
A heavy-duty three-way tipper for builders' merchants and groundworkers who need to tip to either side as well as the rear. The wide model line (2000kg to 3500kg gross) lets buyers pick a size without moving to a different range.
Listed by
- Trek-Trailers Lincolnshire - Doncaster, Belton
- Trek-Trailers Suffolk - Bury Saint Edmunds
- Trek-Trailers Three Counties - Hereford
Common questions
What is the difference between the Equi-Trek Sonic 3,500kg and the Humbaur HTK?
The Equi-Trek Sonic 3,500kg is a compact 3.5 tonne motorised 2-horse horsebox; the Humbaur HTK is a a tandem-axle three-way tipping trailer for construction and agricultural use.
Can I tow the Equi-Trek Sonic 3,500kg or the Humbaur HTK 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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