![]() Pro Open Class win at the 1986 Four-Stroke Championships, ridden by Doug Dubach.2nd in Semi at 13th overall at Ascot TT Nationals, ridden by Warren Reid.Semi-win at ABC's 1985 Superbikes Event, ridden by Steve Eklund.Overall win at the 1985 Four-Stroke Nationals, ridden by Brian Myerscough.His first prototype machine would produce the following placements: Known later as the A-Trak, Leitner originally called this device the Anti-Tension Kettenantrieb ( German: Anti-Tension Chain Drive). Leitner named the new venture ATK after his patented device to eliminate chain torque for improved handling. In 1985, after successfully patenting a new motorcycle drive-tensioning system and marketing custom-frame kit bikes designed to accept Honda XR350 engines, Leitner was approached by Puch, who offered to fund a motorcycle company based on his designs. Rear: White Power Monoshock w/12.6" TravelĪTK was founded by Horst Leitner, an Austrian-born engineer, Grand Prix motocross racer, and International Six Days Trial gold medallist, following his relocation to the United States in 1980. Rotax 562 cc (34.3 cu in) air cooled four-valve four-stroke single Type of motorcycle 1985 ATK 604 Manufacturer
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