Sisu K-44 is a three-axle 4×4+2 driven lorry made by the Finnish heavy vehicle manufacturer Suomen Autoteollisuus (SAT) from 1959 to 1965. The most usual applications were for log transportation and earth moving vehicles. The K-44 was noted for its excellent gradient capabilities. The legally permissible maximum vehicle payload was between 7 800 and 11 750 kg: with a trailer this increased to 20 000 kg.