is an off-road motorcycle manufacturer in Centerville, Utah, U.S.A. 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

Throughout its history has enjoyed a tremendous winning tradition. From desert racing to the dirt track finishes first at the finish line. A reputation of winning follows not only in racing but also in ground breaking product innovation. Technology firsts, such as ’s namesake - the anti-tension kutentraub,
side mounted shocks, linkless suspension, the first fuel-injected offroad motorcycle, and the first production motard have all moved the industry forward.

ATK’s pace setting quality standards in engineering and manufacturing build reliability into every vehicle. In 2003 ATK purchased the remaining inventory of Cannondale Motorsports. This purchase added ATV’s to the ATK product line. For over two years ATK has refined and evolved the Cannondale platform. In 2004 ATK took first place in the Grand National Cross Country Championship and two Canadian National championships. The winning tradition continues.