Sisu Axles
 Sisu Axles Inc. (Finnish: Sisu Akselit Oy) is a producer of heavy vehicle axles in Hämeenlinna Finland.The company's main markets are in heavy truck terminal tractor and military vehicle axles; the driven axles are exclusively with planetary reduction. Sisu Axles was started when Suomen Autoteollisuus later Sisu Auto started own axle production in Helsinki in 1940s. The production was later transferred to Hämeenlinna and sold to investors. The current owner is American Marmon Group.