Head to head
Equi-Trek Sonic 3,500kg vs Lider 39400E
The Lider 39400E is 2,235kg lighter empty. The Equi-Trek Sonic 3,500kg is rated 3 tonnes heavier gross.
Last reviewed 13 September 2026

Key differences
- Unladen weight: the Equi-Trek Sonic 3,500kg weighs 2,235kg more empty.
- Gross weight: the Equi-Trek Sonic 3,500kg is rated 3 tonnes heavier gross.
Specifications side by side
| Equi-Trek Sonic 3,500kg | Lider 39400E | |
|---|---|---|
| Gross weight | 3500kg | 500kg |
| Unladen weight | 2320kg | 85kg |
| Internal length | - | 173cm |
| Internal width | - | 115cm |
| Axles | - | 1 |
| Brakes | - | Unbraked |
Sources: Equi-Trek Sonic 3,500kg, Lider 39400E. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Sonic 3,500kg if...
- you want one that is rated 3 tonnes heavier gross
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 39400E if...
- you want one that is 2,235kg lighter empty
The lightest motorcycle trailer in the Lider range, aimed at owners of smaller bikes who want the least weight to tow and store.
Listed by
- Lider Trailers - Accrington, Blackburn
Common questions
What is the difference between the Equi-Trek Sonic 3,500kg and the Lider 39400E?
The Lider 39400E is 2,235kg lighter empty. The Equi-Trek Sonic 3,500kg is rated 3 tonnes heavier gross. The Equi-Trek Sonic 3,500kg is a compact 3.5 tonne motorised 2-horse horsebox; the Lider 39400E is a an unbraked single-axle trailer for carrying one motorcycle, lighter than the 29420/39401..
Which is lighter, the Equi-Trek Sonic 3,500kg or the Lider 39400E?
The Lider 39400E. It is 2,235kg lighter empty than the Equi-Trek Sonic 3,500kg.
Can I tow the Equi-Trek Sonic 3,500kg or the Lider 39400E 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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