KTM Two years later in 1962, Hans Trunkenpolz also died of a heart attack. His son "Erich Trunkenpolz" took charge of the company's management. As the company continued to expand, the workforce totaled 400 in 1971, and forty years after it was founded, KTM was offering 42 different models. Besides, KTM was able to produce motorcycles for the racing industry. During the 1970s and 80s, KTM also started to develop and produce motors and radiators. Radiators sold to European car manufacturers constituted a sizable part of the company's business in the 1980s. In 1978, US subsidiary "KTM North America Inc." was
KTM founded in Lorain, Ohio. In 1980, the company was renamed "KTM Motor-Fahrzeugbau KG". One year later, KTM had about 700 employees and a turnover of 750m. Schilling (about 54.5m. euros). International business then amounted to 76 % of the company turnover. However, scooter and moped turnover sank rapidly, and production had to be halted in 1988. Erich Trunkenpolz died in 1989. Takeover of a 51 % interest in the company by the Austrian investment trust GIT Trust Holding controlled by Austrian politician Josef Taus in 1989 was followed by unsuccessful attempts to turn the indebted company around, and in 1991,