Following the release of the film "Viva Knievel", Ideal issued the GT Stunt Cycle in 1977. This set included attachments that would make Knievel perform even more stunts than earlier version. The box remained the same with the addition of a sticker, which described the cycle’s new features. The box shows a copyright of 1975 however the set wasn't released until 1977.
The GT Stunt Cycle Set was the last produced set by Ideal and are extremely rare. Sealed Boxes sell as high as $1000.