ATK was founded by Austrian-born engineer Horst Leitner in the 1980s. The name "ATK" comes from Leitner's 1981 patented device to eliminate chain torque for improved handling. Known later as the A-Trax, Leitner originally called the device the Anti-Tension Kettenantrieb (German: chain drive).
As of 5/20/2011 ATK has associated itself with S&T Motors, parent company of the Changwon, South Korea based Hyosung. S&T/Hyosung will make motorcycles with ATK nameplates and a few requested changes to the standard Hyosung Motorcycles. Both supersport and cruiser models from 250 to 700cc engine sizes. All have V-Twin engines.
The Initimidator is a monster dirt-bike powered by a Script error: No such module "convert". Maico two-stroke engine. As of June 2008, only Maico itself has a machine comparable to this. ATK also has a line of atvs that use a 900cc efi engine.
- "ATK History". ATK Motorcycles. Retrieved 2004-03-11.
- "Patents". AMP Research. Archived from the original on 19 March 2006. Retrieved 2006-03-11.[dead link]
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