Unsinn ASK 1831-13-1770
Built: 2021 · Series: Trailers up to 3.5 t (Class O2)
More machines from model year 2021
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Unsinn trailers up to 3.5 t (Class O2) – the German trailer builder for cars with GTP/GTAS/GDP type series for flatbed and low-bed transport: 223 versions, unladen weights 150 to 2,550 kg, gross weights up to 3.5 t
Class O2 groups together, according to registration data from the Netherlands and Finland, all trailers with a permissible gross weight from 0.75 to 3.5 tonnes. Unsinn is a German manufacturer of car and light transport trailers; the type codes in the register – GTP, GTAS, GDP, AS, C6 – followed by a four-digit number and an axle-load figure show a modular system of flatbed (GTP, C6), low-bed (GTAS) and box trailers (GDP), in which the first two digits visibly encode length and width in decimetres.
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The register lists 223 versions with unladen weights from 150 to 2,550 kg and permissible gross weights from 1,300 to 3,500 kg. Lengths are recorded for 130 of the 223 vehicles and range from 3,560 to 10,580 mm, width for all 223 versions from 1,470 to 2,550 mm.
With a broad range from light single-axle trailers to multi-axle low-beds for machinery and vehicle transport, Unsinn serves both private customers and trades and businesses – a market segment in which, alongside a few nationwide brands, many regional trailer builders are active.
For a used car trailer of this class, check the function and adjustment of the overrun device including the handbrake, the condition of brake linings and drums, rubber torsion axles for cracks and settling behaviour, frame and floor corrosion, and a functioning lighting system. For low-beds, also check ramps, lashing points and the load-bed capacity, plus tyre age regardless of tread depth.
Sources: SpecCodex register, model data: Unsinn
Technical data
Dimensions and weights
| Length | 4,640 mmcorrect |
|---|---|
| Width | 2,360 mmcorrect |
| Wheelbase | 2,820 mmcorrect |
| Unladen weight | 551 kgcorrect |
| Gross vehicle weight | 1,800 kgcorrect |
Drivetrain and chassis
| Wheels | 2correct |
|---|---|
| Top speed | 140 km/hcorrect |
Frequently asked questions
How much does the Unsinn ASK 1831-13-1770 weigh?
The unladen weight is 551 kg.
What is the gross vehicle weight of the Unsinn ASK 1831-13-1770?
1,800 kg.
Up to what speed is the Unsinn ASK 1831-13-1770 approved?
Approved up to 140 km/h.
What are the dimensions of the Unsinn ASK 1831-13-1770?
4,640 mm × 2,360 mm.
When was the Unsinn ASK 1831-13-1770 built?
Production years: 2021.
What to check before buying
- Search the frame and welds at the axle mounts — that is where cracks start.
- Check the brakes and the last inspection in the papers.
- Work the gross weight against the towing vehicle before buying.
- Compare the chassis number with the papers.
- Look at the floor, cover or body from the inside — rust does not show from outside.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 10 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Other models in this series
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2025-10-1685
68
AHK 3043-10-2070
AHK 3543-13-2070
AS 1426-13-1550
AS 1426-MO-1550
AS 1526-MO-1800
AS 1531
AS 1531-13-1800
AS 1537-MO-1800
AS 1831-13-1800
Sources: [1]
Trailer in 3D section
Turn the model, look inside and click an assembly — each one is explained.