Head to head
Equi-Trek Evolution vs Stewart GX 15 FT
The Stewart GX 15 FT is rated 7.8 tonnes heavier gross.
Last reviewed 13 September 2026

Key differences
- Gross weight: the Stewart GX 15 FT is rated 7.8 tonnes heavier gross.
Specifications side by side
| Equi-Trek Evolution | Stewart GX 15 FT | |
|---|---|---|
| Gross weight | 7200kg | 15,000kg |
| Unladen weight | 4500kg | - |
| Overall length | 8.354m | - |
| Overall width | 2.375m | - |
| Overall height | 3.185m | - |
| Length | - | 7,900-9,700mm (26-32ft) |
| Tare weight | - | 3,980kg |
| Axles | - | 125mm dia., 10-stud, 420x180mm brakes |
| Tyres | - | 385/65Rx22.5 standard, 435/50Rx19.5 flotation option |
Sources: Equi-Trek Evolution, Stewart GX 15 FT. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Evolution if...
A large motorised horsebox on an Iveco chassis for yards or professionals moving up to three horses or four ponies, requiring a 7.5 tonne category licence to drive. It sits toward the top of Equi-Trek's motorised range alongside the Endeavour.
Listed by
- Trek-Trailers Three Counties - Hereford
- Trek-Trailers Lincolnshire - Doncaster, Belton
Buy or hire the GX 15 FT if...
- you want one that is rated 7.8 tonnes heavier gross
A 15-tonne flat trailer from Scottish maker Stewart Trailers, built for farms and hire fleets moving bulky loads such as bales or machinery. The choice of standard or flotation tyres lets it be set up for road use or softer ground.
Listed by
- Rising Sun Trailer Hire - York
Common questions
What is the difference between the Equi-Trek Evolution and the Stewart GX 15 FT?
The Stewart GX 15 FT is rated 7.8 tonnes heavier gross. The Equi-Trek Evolution is a 7.2 tonne motorised horsebox for up to three horses; the Stewart GX 15 FT is a twin-axle flat trailer for agricultural and general haulage use.
Can I tow the Equi-Trek Evolution or the Stewart GX 15 FT on a car licence?
Equi-Trek Evolution and Stewart GX 15 FT are rated over 3,500kg gross, which is beyond what a car can tow in the UK.
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