Technical register for agricultural, construction and commercial machinery · sourced data
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Sisu SM 300-CA-KH

Built: 1988 · Series: SM

More machines from model year 1988

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The Sisu SM 300-CA-KH belongs to the SM series. Production: 1988. The engine delivers 298 kW, has 6 cylinders, with a displacement of 14,000 cm³. The vehicle is 11,600 mm long and 2,800 mm wide. The unladen weight is 12,050 kg. The gross vehicle weight is 34,000 kg. The gearbox offers 4 gears. The SM series covers 131 models. Rated output within it ranges from 248 to 392 kW; the SM 300-CA-KH sits in the lower part of that range with 298 kW. Its immediate neighbours are the SM 282 CKH-6X2-38/410+130 below it with 282 kW and the SM 312 above it with 306 kW. Unladen weight within it ranges from 6,800 to 24,600 kg; here the SM 300-CA-KH sits in the lower part of that range with 12,050 kg. 1416 Sisu models across 44 series are on record.

Sisu SM – heavy Finnish truck for forestry and construction work: six-cylinder diesel engines from 10 to 14 litres, 248 to 392 kW, axle configurations up to 8x2, gross weights up to 44 tonnes

Sisu is a Finnish truck maker with a plant in Kaipiainen and a long tradition as the main supplier of heavy military and special vehicles for the Finnish armed forces, as well as a provider of rugged chassis for forestry, construction and winter road maintenance across northern Europe. The SM range stands in this tradition and was built before the current E range (E11M/E12M), which is listed separately in the register; the letter combinations in the model names, such as CKH or CAKH, distinguish individual versions within the range, though their exact meaning cannot be conclusively resolved from the register alone. A straight-six diesel engine is fitted throughout. The register lists 131 versions with power outputs from 248 to 392 kW and displacements from 10,000 to 14,000 cm³, all with six cylinders. Unladen weights range from 6,800 to 24,750 kg, permissible gross weights from 20,000 to 44,200 kg at widths between 2,500 and 2,850 mm. With axle configurations up to 8x2 and bodies for round-timber haulage, tipper work or towing piste groomers, the SM range serves a niche segment in which Sisu traditionally competes against Volvo, Scania and its own, newer E range. On used examples, important points are rust on the frame and crane mounts on forestry vehicles, the condition of the rear-axle final drive and transfer case on multi-axle versions, the braking system including engine brake, the crane hydraulics on appropriately equipped vehicles, and spare-parts supply, which is limited outside Finland due to low production volumes.

Sources: SpecCodex register, model data: Sisu SM

Technical data

Engine

Power298 kWcorrect
Cylinders6correct
Displacement14,000 cm³correct

Dimensions and weights

Length11,600 mmcorrect
Width2,800 mmcorrect
Unladen weight12,050 kgcorrect
Gross vehicle weight34,000 kgcorrect

Drivetrain and chassis

Gears4correct

Where this model stands

Power-to-weight ratio: 24.7 kW/t (298 kW / 12.1 t)

Stronger than 54% of the trucks in the register — out of 25,242 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Sisu SM 300-CA-KH have?

The Sisu SM 300-CA-KH delivers 298 kW.

How much does the Sisu SM 300-CA-KH weigh?

The unladen weight is 12,050 kg.

What is the gross vehicle weight of the Sisu SM 300-CA-KH?

34,000 kg.

What engine does the Sisu SM 300-CA-KH have?

6 cylinders, 14,000 cm³ displacement.

What are the dimensions of the Sisu SM 300-CA-KH?

11,600 mm × 2,800 mm.

When was the Sisu SM 300-CA-KH built?

Production years: 1988.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Check the weights in the papers against the figures here — attachments change them.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 9 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

Sources: Traficom — Finnish vehicle register (retrieved August 2026) · How we check the data

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