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Stewart GX 18-23 S vs Sun Way Galaxy SW345PN

The Stewart GX 18-23 S is rated 19.5 tonnes heavier gross.

Last reviewed 13 September 2026

GX 18-23 S
Stewart GX 18-23 S
Sun Way Galaxy SW345PN
Sun Way Galaxy SW345PN - image: lidertrailers.co.uk

Key differences

Specifications side by side

Stewart GX 18-23 SSun Way Galaxy SW345PN
Gross weight20,000kg500 kg
Axles125mm dia., 10-stud, 420x180mm brakesSingle, unbraked
Body size6,700 x 2,450 x 1,500mm-
Cubic capacity23m3 grain, 39m3 silage-
Tare weight5,900kg-
Unladen weight-160 kg
Payload-340 kg
Length-4.70 m (frame)
Width-1.84 m
Suitable boat length-4.40 m

Sources: Stewart GX 18-23 S, Sun Way Galaxy SW345PN. Figures vary by model year and options, so check with the supplier before you commit.

Buy or hire the GX 18-23 S if...

  • you want one that is rated 19.5 tonnes heavier gross

An 18-23 tonne tipping trailer built for grain and silage haulage, with an easy-sheet system so one person can cover a loaded trailer without climbing on top. Its monocoque steel body gives it the extra capacity over Stewart's standard flat trailers.

Listed by

Full GX 18-23 S specifications →

Buy or hire the Galaxy SW345PN if...

The Galaxy SW345PN suits owners of inflatables and small RIBs who want the lightest trailer that still meets EU type approval, since its 500kg gross weight lets many small cars tow it without extra licence categories. Its multi-roller bed is built for a soft or RIB hull rather than a hard-chine motorboat.

Listed by

Full Galaxy SW345PN specifications →

Common questions

What is the difference between the Stewart GX 18-23 S and the Sun Way Galaxy SW345PN?

The Stewart GX 18-23 S is rated 19.5 tonnes heavier gross. The Stewart GX 18-23 S is a twin-axle tipping grain and silage trailer with an easy-sheet cover system; the Sun Way Galaxy SW345PN is a a lightweight single-axle boat trailer from Sun Way's Galaxy range, designed for inflatable and rigid inflatable boats..

Can I tow the Stewart GX 18-23 S or the Sun Way Galaxy SW345PN on a car licence?

Stewart GX 18-23 S is rated over 3,500kg gross, which is beyond what a car can tow in the UK.

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