After market services include customer support, advisory and spare parts.

The main segments are heavy-duty trucks for on- and off-road use and also industrial and military applications.

[7] For military applications the selection includes both conventional rigid axles as well as independent suspension systems, all of them being driven with planetary reduction.

Oy Suomen Autoteollisuus Ab (SAT), the producer of Sisu vehicles, started its own axle production[9] in Fleming Street factory, Helsinki[10] in 1942 due to war-time poor availability of components.

The initial design was borrowed from Timken axles which had previously been commonly used in Sisu vehicles.

Production of heavier axles required investments; major part of machinery was renewed.

Many of the new employees were young people, newly graduated from professional school and with very little work experience.

[11] The axle business unit was separated to a different company Sisu Akselit Oy at the end of 1995.