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Gooseneck, extendable, combo or slider: how to choose a container chassis

Four chassis layouts, the containers each one carries, and the questions to settle before you ask for a quote.

SBSon Bui, SBSindustries Oct 28, 2026 7 min read
Skeletal container chassis parked at a port terminal
Skeletal container chassis at a port terminal.

Short answer

Choose by the containers you move. A gooseneck chassis carries a 40 ft container lower, which helps with high-cube boxes. An extendable chassis adjusts between 40 and 45 ft. A slider chassis adjusts from 40 up to 53 ft. A combo chassis takes one 20 ft or one 40 ft container.

Start from the containers you move

Before comparing models, write down the container lengths your fleet handles and roughly how often. A trucker moving only 40 ft boxes between a port and one inland depot needs a different unit from one that switches between 20 ft and 45 ft work every week.

Then note the heaviest loaded container you expect. The chassis payload must cover it, and the axle group must stay within the weight limits on your route.

The four layouts

Payloads below are the figures in our range today. They are confirmed per model in the quotation.

LayoutContainer lengthsAxlesPayloadChoose it when
Gooseneck40 ftTandem or tridemabout 30,480 kg (tandem), about 34,020 kg (tridem)You move mostly 40 ft boxes, including high-cube, and overall height matters.
Extendable40 and 45 ftTandemabout 30,480 kgYour fleet sees both 40 ft and 45 ft containers.
Slider40, 45, 48 and 53 ftTridemabout 30,480 kgYou also handle longer domestic containers and need to set the length per load.
Combo20 or 40 ftTandemabout 24,720 kg (20 ft), about 25,850 kg (40 ft)You switch between 20 ft and 40 ft work and want one unit for both.

Source: SBSindustries technical file. Full values on the specifications page.

Gooseneck

The front of the frame steps down into the tunnel under a 40 ft container, so the box sits lower than on a flat frame. That matters when you carry 9 ft 6 in high-cube containers under a height limit.

Extendable and slider

Both change length to suit the container. An extendable chassis covers 40 and 45 ft. A slider covers 40, 45, 48 and 53 ft, for operators who also handle longer domestic containers. The extra length range adds tare weight.

Combo

A combo chassis takes either one 20 ft or one 40 ft container on fixed lock positions. It suits mixed work, at a lower payload than a dedicated chassis.

Compare all 24 models by length, tare and payload.

Open specifications

Skeletal trailer or chassis?

Both carry containers. In our range, skeletal semi-trailers come in 2- and 3-axle versions for 20, 40 and 45 ft containers. The container chassis are lighter: tare starts from about 2,380 kg for the lightweight 40 ft gooseneck. If you also need to carry general cargo, a flatbed trailer with container locks does both jobs.

See container trailers and chassis →

Check the rules on your route

Axle load limits, gross weight limits, overall height, and brake and lighting rules differ by country. Tell us the destination country with your request and we confirm which specification the units are built and documented to.

Checklist before you ask for a quote

  • The container lengths you move, and the share of each
  • The heaviest loaded container you expect, in kg
  • Axle and gross weight limits on your main routes
  • Overall height limit, if you run high-cube containers
  • Brake, ABS, lighting and tyre requirements in your country
  • Quantity, destination port and the date you need the units

Send these with your request. Pricing is quoted on request, and a written quote is valid for 14 days.

SB

Son Bui

Handles enquiries and quotations at SBSindustries. Questions about this guide: +84 906 688 264 (WhatsApp).

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